1) Birthers, in my opinion, are those who persist in believing that there is some kind of conspiracy to cover-up the circumstances surrounding BHOs birth. Whether those circumstances are his parentage, location of birth, gender, religion, or other new ideas that get thought up as the conspiracy theories evolve.
From what Ive seen, they have a tendency to latch on to other fallacies as well. The name seems to currently encompass a variety of stories and opinions regarding BHOs Social Security number too.
As we are dealing with a group, there will always be variations and differences. Some current Birthers dont believe that BHO was born in Kenya (though in 2008 this was a required tenet of faith). They might instead think that BHOs father was someone other than BHO Sr..
Birthers are rather interesting in the same way JFK assassination conspiracy fanatics are. They cannot, to any appreciable extent, agree among themselves as to what actually happened. They can only agree that the truth is something other than what someone else thinks it is.
I dont necessarily lump all the dual-citizenship or non-citizen parentage folks into this camp. I personally think an NBC should have two citizen parents. But from what I can tell, the legal support for this isnt there. Others disagree, thats fine.
2) As for behavior, from what Ive seen you personally behave pretty well towards those who disagree with Birthers. I think you are quick to make assumptions about them, but I cannot deny that you seem to comport yourself well. Butterdezillion is the same way. We each think the other is waaay off the mark, but she treats people decently and with a certain level of respect.
That said, Ive been called far too many vile names and accused of too many unnatural acts by other Birthers over the last three years to be very moved by those who would hie to their fainting couches every time a Birther gets called a fool, an idiot or is confronted by the word crap.
As for your last question, this is something that Birthers as a whole seem to be unable to get past. You see, you dont need to take BHOs word for anything on this. Question everything BHO says. Thats all good and well and reasonable. But what about Hawaiian vital records? Or newspaper archives? Or the good faith and commitment of Conservative legal foundations. Or Conservative commentators and pundits. Must a person resort to the wildest speculation to toss aside Hawaiian vital records, include Republicans in the conspiracy, claim the USSC is being blackmailed, argue that the Judicial Branch is in the tank for BHO or play conformational bias games with information just because the target is someone they detest?
What evidence do you use in your assumption that (1) Obama Sr was Barry’s dad and (2) Ann Dunham was Barry’s mom?