A week after terrorists tied to the Islamic State terrorist group killed 129 people in Paris, some Republican politicians have responded with the kind of rhetoric that another Republican — George W. Bush — explicitly avoided after the al-Qaeda attacks of Sept. 11, 2001. In the angry aftermath, Bush said that “Islam is peace” and that all Muslims should not be judged for the deeds of a few radicals. But in this election — already defined by a suspicion of government and anger about immigration — the rhetoric on Muslims has become a dominant feature of the Republican response to the attacks. It also comes as 47 House Democrats joined with 242 Republicans on Thursday to pass a bill placing new security constraints on President Obama’s pledge to admit 10,000 Syrian refugees, most of whom would be Muslim.