I'm sure pretty much all of them are innocent
I'm sure that by random chance a few of them may be gang members, but that's what happens if you pick up a random group of people. Most will be perfectly fine and nice people, a few will be bad.
That does leave the thousands others that are innocent and are now being put in terrorist jail cells. Well, cells designed for terrorists anyway, a good amount of the prisoners in Guantanamo Bay were innocent too yet spent decades there
What a fucking shit show is the US