I feel you. I hate that feeling. To me the worst is if you make a joke or suggestion and the reaction is silence, but if someone else says it they get laughter or praise.
I don't know your exact position, but getting louder the second time is an option that can help. But if your colleagures are just assholes or bullies I can only say just hang in there.
Today Sisko arrived in San Francisco. The bell riots are near