Why do people hate Scousers?

Is there a manc stereotype? Wasn't aware if one being brought up in Liverpool

There is. We call them SuperMancs. Either football hooligan Burberry lads or shit Liam Gallagher pretenders. It might not be so pervasive, but a stereotype non the less.

Manchester is another dive. Or at least the bit between the station and Old Trafford is.
Steady on fella, that's my mum you're talking about.

But the Manc/Scouse divide was apparently born of the time when Manchester's cotton workers refused to spin cotton farmed by slaves (and recieved a letter of solidarity from Abe Lincoln) whereas the scouse dockers kept on accepting the shipments.
Then football came into it and muddied the waters.