The down vote is because you answered a question Bob a/k/a Ben Rutgers a/k/a user50888 also answered. Competing answers to questions Ben, err, I mean Bob, has answered are frequently downvoted. For the past several months, every single answer I've posted to a question that has also been answered by Bob (either before or after I answered it) has received at least one downvote.
I'm going to give a somewhat generalised answer here:
- Systematic downvoting is not acceptable.
- If you believe systematic downvoting is occurring, the correct way to handle this is to not to post a forcefully worded comment, but instead to flag posts for moderator attention. While moderators have no ability to see individual votes, we will escalate serious issues to Stack Exchange staff to investigate.
- If comments are posted which do not further the Stack Exchange goal of building a community that is rooted in kindness, collaboration, and mutual respect, the correct way to handle this is not to post a passive-aggressive question on Meta, but instead to flag the comment for moderator attention.
Even more generally, I would request that everybody involved here takes some time to re-read the Code of Conduct and to try and modify their future actions so that incidents like this can be avoided. Thank you.