Stop posting about people sending offensive content.

All of these people do it for attention. When you post their crap on Reddit, you boost their ego, leading to them continuing to do it. If you see someone post such content, report the conversation.

You can report the conversation by clicking on the three dots and hitting the report button.

Once again, the only reason these people send such content is because they relish in negative attention. Positive attention too, from people who share such values.