"I hate when somebody does a stupid or bad thing that causes trouble for me or others"

You can also say:

"I hate when a stupid or bad thing that somebody does causes trouble for me or others"

Or:

"I hate when somebody does a stupid or bad thing and it causes trouble for me or others"

Tip: The "and" between does and cause makes the sentence confusing and hard to understand. You need an "it" after or remove the "and", otherwise it sounds like a seperate happening.