I know this will fall on deaf ears but why does anyone attempt to dialog with Sammy, Dion, MAB, et al? They're never EVER going to admit that they're wrong, that facts presented even subtly changed their viewpoint, that there may, in fact, be more than one way of interpreting facts/events, etc. Constantly replying to their DNC talking points with 'false', 'you're an idiot', etc. is pointless. My suspicion is that they don't actually believe much of what they post but they know the usual suspects will immediately give them validation by replying to their posts. Replying to them is what they want. They aren't listening to your arguments and aren't considering anything other than what they believe. So, why waste even 1 second engaging with them? BTW, I've put some of our more reactionary/Far Right posters on ignore, also. Anyone who is so dogmatic that they have the ONLY truth is a surefire bet to be on ignore posthaste.
If you would all just ignore them, they wouldn't get the attention they crave and live for and, perhaps, they'd just go away. Ignore is a wonderful thing. I'm all for a reasoned, intellectual debate. But, talking with the above posters is like a Martian trying to converse with a fungo bat. IGNORE them and they'll stop - just like 2-year olds throwing a tantrum. If you constantly react to them, you'll only get more outrageous and more frequent tantrums. Ignore and they stop.