You are way nicer than I would have been. If people think you laugh too loud... f*ck 'em. The fact that you take joy in life, that you are a happy person... these are GOOD things. How dare someone presume to try to stifle you???
I have black friends. Some of them are quiet and reserved. Some are loud. Because, you know, they are individuals... Guess what - there are loud white people too, and loud Asians and so on.
One of the funniest people I know is a black lady with a loud laugh, and I love it, because it makes me happy to hear. She is on my speed-dial to call when I'd down because she never fails to cheer me up.
We need more people like that in the world!