I agree that it this comparison is overblown, and do not believe in general that this kind of overstatements do any good to the cause of those who make them.

There is something in common though: that very dangerous belief that lying and ignoring the law is justified by the end goal. Speaking of lies, where did you get this statistics that 50% of expulsed immigrants are criminals? Even their own statistics (https://www.ice.gov/statistics) show that a small minority have ever been convicted (and I would assume that most of those convictions would not be very serious crimes)