Look, we all get caught up in the argument. I hate the word liar/lying so I never use it. So we concur on that. I've sometimes said "that's a lie" when I know someone is intentionally repeating something that they've been repeatedly corrected on. But "that's a lie", while negative, and "that post is wrong" or even "that's one of the stupidest things I've ever read", are not blanket accusations of a whole group.
More important is the sophistry (perhaps unintended, offering you an out here) that in a thread that's been going on for a year and a half and which has Hillary Clinton as the topic, the implication is that your fellow posters are stupid. (Many of us may be, but that has nought to do with the topic and is crossing the line to attacking the arguer.)
I don't like the word either and I don't call people liars. But of course when I say some members of a group are dumb, you throw a fit, and when I'm personally called a liar, it's par for the course.
And I notice you still haven't condemned the personal attack on me and offered the other person an "out" (by apologizing, maybe)? It wasn't "that's a lie" or "that's a stupid comment". It was a direct accusation that I'm a liar. Which went totally ignored. So if that's going to be tolerated, don't complain when I throw it back at people. I call it as I see it. If personal insults against me are OK, and nobody complains when they happen, what do you expect from me? I'm not a saint.