He is a bigot because he doesn’t realize that Islam is the only true religion and the students must be converted.
At that YouTube link the following speeches are also good. It was pretty clear that the unified school district was a bit in over their heads with that crowd.
It seems San Diego has become a focal point.
Earlier this year at UCSB:
https://www.youtube.com/watch?v=pmlIJ0mUXKU