No, Stan, you can't change what you said just because I proved you wrong.
You literally said "Ask all the white hate groups that bomb black schools" - that mean that a bomb went off. That's what a bombing is. Now, since you had your stuff handed to you, you're backtracking to "bomb threats"? No, sorry, you lost.
Notice as well that you first said "black schools" and now you're saying "schools of color". What in the actual heck is a school of color? Besides, what happened to integration? Or, are the black folks self segregating themselves?
Finally, you can't claim victory by telling me to find the evidence that supports your case. You made the claim, you provide the evidence. That's how it works. But you know that you can't do it, because you lost.