My sister who is a teacher told me at the last so-called teachers learning conference she had to attend,that they were taught when talking about any subject that could be controversial that they should not make kids raise their hands for questions. They should have a little piece of paper that the teacher could see on each desk that says question and the teacher can go to that kids desk and talk with them in a low voice. Or they could have hand signals like a clinched fist or open palm for the signal. Now this is the crap teachers spend their time on supposidly learning to teach with better methods. Don't want to hurt or embaress a student. Tax money being put to good teacher training.
Unless it's to handcuff them and haul them off to the cop station because they had a pair of scissors.