The doofus has a problem with "9/11".
At the time, he's on record apparently boasting that the WTC collapse left him with the "tallest building in the district". Because that's the way his sick mind works.
Now he's arguing that anti-semitic terror attack doesn't justify any action by him to change his schedule of rallies, because in the aftermath of 9/11, "Wall Street was open and running the very next day". Except it wasn't - there was a trading halt on Wall St for a week.