Firstly, I don't give enough of a fuck about what any individual thinks and I certainly don't do background checks on conference speakers.

Secondly, where do you draw the line? Shop workers? Hair dressers? Your taxi driver? Many of those in the country in which I am an immigrant would gladly forcibly deport me and separate me from my family; but I don't run scared enough of them to try to silence them or hide from them.

Also, I think you're being somewhat dramatic here saying he openly called for imprisonment and executions, but please provide sources if I'm wrong.