In this answer everything is bad, everything except for the last line which is a link to a good source is unrelated to the question. The first part is a rant against the NRA, and the second part is giving data that is not asked in the question with no context to connect it. My question is what to do with the one link of good data?
Editing the question to remove the bad parts and expanding an actual answer using the source looks like too radical a change for me. Also, taking that source and adding it to my answer with the proper data and quotes seems somewhat "plagiarismy".
What is the correct course of action?