Everyone should tweet @hiroyuki_ni with the #BLM and #END15 hastags (with a picture of ponies) calling for an end to GR15, denouncing it as outdated and divisive. Mainly just to flood the #BLM hashtag with pictures of ponies.
Oh, I forgot to mention to mention "Brony Lives Matter" in there of course. In order to co-opt the hashtag.
It's an interesting and clever idea. The problem is potential backlash, both from bringing attention from obviously batshit crazy leftists, as well as outing participating Twitter accounts on /ourside/
I sympathize with OP's idea, however, Twitter accounts to burn aren't many.
I tried making a Twitter but it kept asking for my phone. Fuck that, it's not getting my phone number.