The parallels and contrasts between Islamists - Muslim Brotherhood vs Salafi/ al-Qaeda - and revolutionary movements of the left in the twentieth century--Communist vs Trotskyist/ Maoist--are both eerie and instructive.
That IS's caliphate is dismissed by senior Sunni ulama [scholars] such as Yusuf al-Qaradawi, who said that the declaration "is void under sharia," Egypt's al-Azhar sheikh Abbas Shuman, who delcared that "The Islamic caliphate can't be restored by force," and of course, Saudi officials, is only to be expected. However, Muslims are tired of fatwas which do nothing to seriously challenge the injustices to which they are subjected. No matter what sins IS has committed or may commit, it can count on implicit support by many Muslims, just as Bin Laden did, and just as many leftists often blindly supported ruthless revolutionary movements in the twentieth century.
How can this be? In the first place, for better or for worse, all these revolutionaries-- secular and jihadist--must be considered the "real thing": genuinely committed revolutionaries, incorruptible and willing to sacrifice themselves to pursue a selfless agenda. For those in the Muslim world, who are weary of choking on oppressive secularists who preside over societies awash in corruption, this is important.
Even as they unwittingly adopt many of the imperialists' arms and strategies (compromising the goal of communism or renewing Islamic civilization,) their personal morality is very different from that of the imperialists. While serving imperialism inadvertently, as do, for example, Bin Laden and Zawahiri (by sowing confusion, promoting chaos and death primarily in the Muslim world, and blackening Islam,) these leaders still build their own following through personal moral uprightness and incorruptibility, just as the anarchist terrorists did of the nineteenth century and militant leftists from 1917 and onwards.
Bin Laden fasted (the full-day dry fast) two days a week throughout his adult life and lived with no luxuries, giving away his wealth to support individuals in need and the causes he supported. According to former CIA chief of the Bin Laden issue station (1996--1999) Michael Scheuer, Bin Laden was "pious, brave, generous, intelligent, charismatic, patient, visionary, stubborn, egalitarian, and, most of all, realistic ... wars are only won by killing." It is not enough to merely dismiss them as psychopaths--which they may well be--and to assume that they are only pretending to be devout, however misguided their interpretation of devotion may be.
Nor can they be dismissed as mere puppets of the imperialists. It is quite possible that the CIA inadvertently trained jihadists now members of IS in Jordan, or Turkey armed others as part of its support of anti-Assad rebels. Similarly, Lenin was given passage in the famous sealed train by Germany in 1917 from Switzerland to Russia to better foment revolution, and dismissed as a German spy. So what?
Critics of Islamists point to their willingness to die for their beliefs as evidence that they are nihilists. "Al-Qaeda boasts that while we fear death, they embrace it," and, "They don't respect life, not even their own." But this willingness to die for one's beliefs was always the avowal of believers of all faiths throughout the ages, and for long was proudly asserted by leftist revolutionaries (Fidel Castro's "Liberty or Death"), not to mention US revolutionary Patrick Henry. The fact that leftists, Christians, etc are much less likely to lay down their lives for their beliefs today, merely highlights that western belief systems no longer inspire people, who are happy to live compromised but comfortable lives.
As for terrorism, anti-capitalist non-governmental "terrorism" has a long tradition, dating to at least the nineteenth-century anarchists, whose terrorism inspired latter-day groups such as Baader Meinhof (Germany), the Red Brigades (Italy) and Students for a Democratic Society (US) in the 1970s.
The most troubling parallel between al-Qaeda/ Salafi types and leftist purists such as Trotskyists (only the workers know what's up) or Maoists ("It's the peasants, stupid!") is with respect to Palestine. Gaza's Prime Minister Ismael Haniyeh has gone more than half way to accommodate his al-Qaeda-type extremists, condemning the killing of Osama bin Laden by the US, calling him a "martyr" and an "Arab holy warrior". (The US government condemned his remarks as "outrageous".) This respect for their Islamic nemesis is not reciprocated by Salafis and in particular IS.
In fact, most of today's Salafi jihadist movements have no interest in the Israeli-Palestinian conflict, regarding it as secondary. Instead, their call is to attack governments headed by Muslims (and their Muslim civilians). As reported by Ali Mamouri, one Salafi tweet states, "The Hamas government is apostate, and what it is doing does not constitute jihad, but rather a defence of democracy [which Salafists oppose]." Another says, "Khaled Meshaal [head of Hamas's political bureau]: Hamas fights for the sake of freedom and independence. The Islamic State: it fights so that all religion can be for God."
Egyptian Salafist sheikh Talaat Zahran condemns Hamas as equivalent to Shia, since they receive funding, arms and training from Iran and Hezbollah. Salafis see conflict with an allegedly illegitimate Hamas government as a first step toward confrontation with Israel. Salafists prefer to fight Hamas first and engage Israel later, justifying this by appealing to the struggle against apostasy under the first caliph Abu Bakr, and Salah al-Din's assertion of Sunni Islam over the Shia' Fatimids in the twelfth century prior to that liberation of Palestine. Some IS fighters even burned the Palestinian flag during the Israeli invasion of Gaza in July 2014, because they consider it a symbol of nationalism.
This makes any meeting of anti-imperialist minds impossible in the Muslim world. It means rejecting any strategic compromises with existing anti-imperialist movements. Only when the masses and their leaders are ideologically pure can the liberation of Muslim lands be pursued.
In the case of Trotskyists, they dismissed the Soviet Union under Stalin as at best a "deformed workers' state", "state capitalism", or at worst, a fascist state, no better than Nazi Germany. For them, it was more important to fight apostates (Stalin's terror also destroyed countless sincere communists in the name of purity). This meant that they soon became irrelevant, a gadfly buzzing around the body politic, disrupting serious leftist politicking.