Even taking into account the general short memory span of people In the Western societies I would never have imagined something like this in Washingtonn DC less than 25 years after 911.
When the towers came down on 9/11, they blamed America for her crimes against the Muslim world that provoked such an attack (surely there were such crimes).
These brainwashed people are nothing but zombies. They don't know the details of why they believe as they do. They don't need to know or want to know the details. What they believe gives their lives meaning and that's all that matters.
People are herd animals. And the herd for many is galloping toward the big pro-Hamas rally in DC.