While I certainly agree with your general theme I do think that the idea that white people are racists because of their original sin of having white parents (a view expressed on Medium) is terribly racist. The idea that it’s ok to call people racists for being to the political right of Joseph Stalin often comes across as hateful. I realize that it’s often difficult to not become what we hate, but we should try and not give it a pass when it’s about somebody else.
But yeah, calling all Muslims terrorists is a lack of understanding of subsets and judging the many because of acts of the few. Just like when it happens when any group is judged like that.