Just because you can find a lot of minorities signing up for ICE jobs doesn't really change anything, even if they were all Hispanic. You can always find examples of people going against their own self interest.
There are black white-nationalists [1] out there. There are women who will openly say that women shouldn't be allowed to vote [2].
[1] https://en.wikipedia.org/wiki/Jesse_Lee_Peterson
[2] https://www.newsweek.com/ann-coulter-reconsiders-womens-righ...