Feeling Judged at the Masjid

The adhan was called through the speakers, but then someone started talking about me. Because of my reputation back home, they were throwing harsh words, even using the R slur and other racist insults. I'm of mixed white heritage and they're Asian. I left high school because of terrible racism and bullying. Now they say I'm too old to be in school again, but I'm only 19 this year. I'm in 12th grade, just a year or two behind. Plus, I have chronic lung problems that I'm still getting treatment for. I'm in a government alternative program, sort of semi-homeschooling. It's disheartening to face this in a masjid. We're supposed to be brothers in Islam, yet I feel judged for my life journey. How should I respond to such comments?