Senator Bernie Sanders said he doesn't believe the official response from Israeli authorities, who say that deadly clashes in Gaza this past week were 'violent terror demonstrations,' and that Hamas fighters were embedded within a crowd of protestors. 'From what my understanding is, you have tens and tens of thousands of people who are engaged in a nonviolent protest. I believe now 15 or 20 people, Palestinians, have been killed and many, many others have been wounded. So I think it's a difficult situation, but my assessment is that Israel overreacted on that,' the Vermont Independent told CNN's 'State of the Union' on Sunday. Sanders tweeted that 'the killing of Palestinian demonstrators by Israeli forces in Gaza is tragic. It is the right of all people to protest for a better future without a violent response.'