Time for a review from a sane brony.
It probably isn't, but I actually do think this is a clever idea. While some of us will whine that using a disgusting group such as the Westburo Baptist Church, I find it rather hilarious, and even somewhat original (most anti-brony pics are overused memes or since-disproven arguments, like the ever-overused "bestiality" claim)
Pic's a little blurry, and as is the editing, but that's understandable, considering what you had to work with. The signs are decent and well done. They resemble the originals very well.
I'm perfectly willing to take a joke (let's face it, some sections of the fandom could use some criticism), so I'll admit, this got a good laugh out of me.