Your boss treats you differently than your coworker of a different race. Your coworker seem to always be watching porn when you walk by his cube. Your team leader makes fun of your accent. You want the harassment to stop, but what do you do?
My Boss Harasses Me, What Do I Do?
You have 2 options:
1. Leave
2. Engage an employment lawyer who will operate in a strategic manner in order to out the bully.
If you stay your health is likely to suffer. Consider that you have already lost your job, but act whilst you have some influence over the means of departure.
Hope this helps and good luck.