Brother Boaz, when they start flinging dirt. All I can say is put on the FULL armor of God, and STAND FAST. Don't reply, don't stoop to their level. Don't give them anything to attack. Just stand there.
They'll soon tire of that game. Throwing dirt is no fun if the other guy does not get riled.
It is hard, I know full well. I also know you can do it. I have faith in you. So does the Lord.