Brought to you by the people who’s idea of a debate is to call conservatives:
Racist
Homophobe
Islamophobe
Sexist
Fascist
Nazi
Intolerant
Hater
0bama’s performance is a symptom of what you posted - liberals are not used to having to actually debate issues. They namecall and think they “won” some point.
Arguing with liberals is like playing chess with a pigeon.
No matter how well you play chess, the pigeon just knocks over the pieces, craps on the board, utters incoherent and vaguely obscene sounds, and struts around like he won.