If a community content world is offensive, you can report it. This feature is a part of the rating system, added in the 1.23 update. There are various ways you can report things. Reporting doesn't go too far as it can't really ban you from making worlds on the community content, but if enough reports are made, the world will be removed from communtiy content.
How To Report Edit
One way you can report offensive content is by going into the paused menu while IN THE WORLD, tap rate, select the world, and tap the offensive content button right below the stars.
Reporting Ticks Edit
These are the following ticks that you can use when reporting. You can only use one tick at a time.
Other (If the report you want isn't on the list.)