Ok, you've now completely lost it.
You haven't apologised. You've minimized: jeez, all I did was post a picture, calm down, take your tinfoil hat off. You've insulted me: I'm a twit, I've tried to justify the message on the placard you posted (at no point did I even come CLOSE to this, or even discuss the message).
And you're still flinging wild accusations around. I'm disseminating far-right behaviour? Because I linked, with clear warning and obvious disgust, to a far-right website that featured the same photo you used to smear protestors?
Why didn't you check the image source?
Why was it more important to broadcast it to thousands of readers on MN, than to take the most basic, decent measure of verifying it was from today's march?
You say you never usually do this you always do your research, of course: you're not dim, or lazy, or mendacious so what was it about today's photo that broke your usually rigorous standards?
Since you've already insulted me, I don't see why I shouldn't say what seems the obvious answer: you probably don't check your sources that often. You see something that fits your agenda, and you repost it, retweet, put it up on MN. Millions of people do it. Maybe you're not an outright liar, but you don't have any particular respect for the truth, either. Because, hey, it's just a little photo, one dodgy figure, a rumour described as fact. No biggie. En masse, it might just create a toxic sludge of misinformation, about an emotive and divisive subject, during a referendum. But your part, personally? Just a bit of banter.
And you still can't see why this is a problem.