If this fool had been punched out, I would be fine with it. Ivanka is a liberal, true, but she seems to be a decent type, and she had her children with her. I'm going to be consistent and refuse to tolerate this kind of treatment any more than I did when it was Trump supporters screaming at Heidi Cruz on the convention floor.
It does serve to bring home the fact that she should not be traveling without some type of security.