Israel (now broader Mid East discussion)
1) Deport him where? He may well be British. We stopped shipping undesirables off to Australia ages ago.
2) Deport him for what? Being, e.g. homophobic? Having religious views that are bigoted? We'd be deporting a heck of a lot of people.
3) But if we were going to deport people for posting divisive, harmful, garbage, I'd start with posters like the above.
Rabble rousing demagogues who try to portray extremists as representative of entire groups of people are the worst.