You can check 4chan archive. Everyone seems to be against Bitcoin these days in 4chan tho, all these idiots in /biz/ think they've got a clue on whats going on.
I haven't been on 4chan in a couple of years but what are they saying? I can't see why people over there would be against bitcoin unless they A) Lost money by investing or B) didn't invest anything and missed the bitcoin boat.
They see a chart that's been going downwards, that's all. Bitcoin is an easy target. Their analysis is based on emotion rather than any technical understanding.
If the price started going up again they'd start being positive.