I have been learning this at my work, and I know it's sinking in because I don't even find it hard to bite my tongue anymore. I have learned that these few have been raised in a harsh environment and don't have, or possibly want, the skills or compassion to treat others with respect. I now understand that the way they act should in no way affect the way I act.
Peace and Love
Bravo!
No one can control your emotions other than you. If they do, you decided to let them.
Have a blessed day!