Ignore the ignorance op. if it is real, seek a counselor or talk to somebody. Bottling it up inside is going to make it worse. My friend once had this story thing. He said there are two types of people. The cashier who acts miserable and never treats anybody nicely because she's angry, and the person who has to be nice to everyone and hide it. Well eventually that person who keeps hiding his anger is going to go insane and gun up the grocery store. Don't be the gunman. Get help from whoever you can. Cool story too isn't it?