Translation: "Some minority group members were more likely to threaten/assault teachers and/or other students,

so they got in trouble more often, and that's not fair."  From idiots who have decided minority group kids cannot meet civilized norms.*  Remember that line about 'the soft bigotry of low expectations'?

Personally, I suspect they WANT something terrible to happen, because they can use it as reason to demand Something Be Done.  Which will include banning guns, even if they aren't used in the terrible thing.

*They think minority kids shouldn't be graded like white and asian students, either.  God, such racists they are.