Why do people say these things?

Question

I cannot believe some these people... they say ignorant things which they have no evidence to back them up
all liberals are socialist commies false
all liberals hate america false
all liberals burn flags false
all liberals do drugs false
all liberals hate the military false
all liberals do not go to church false
all liberals are rasict false
all liberals live off of welfare false
all liberals are poor false
all liberals are conspiracy theorists false
all liberals just complain about Bush false
all liberals support illegal immigrants flase
all liberals are against religion false
all liberals are evil false
all liberals are against Israel false

WHEN WILL THESE STUPID,GENERALIZING, STEREOTYPING ACCUSATIONS STOP?

Answer 1

It's a far right tactic since the eighties to demonize liberals.By accusing them of those things they don't have to deal with the very real,urgent and intelligent positions liberals bring forward