He’s just making a play on the fact that you stated “Republican headquarters” as opposed to specific individual members of the headquarters - as if an entity called “Republican headquarters” was shot at, which is of course, not possible.
I know what he was doing I am not the one with the low IQ, he is. His remark was rude and uncalled for, not to mention childishly done. The "Wow" I used in my first comment was done sarcastically, his wow in copying me implied I had the mind of an idiot. If he wishes to make rude comments to people then he must expect to get rude comments in return.