It depends on what form of rap you listen to, if you listen to the mainstream such as Lil Wayne, Rick Ross, etc. and all those other talentless nobodies then yes, you will find a decent amount of perecieved 'misogyny'through lyrics. As someone here stated, hip-hop is just escapism, Rick Ross claims his a gangster and a thug who hates the police but he used to be a correctional officer.
Underground hip hop I've noticed has much less misogyny and it's more about perfecting one's lyrical craft, then make music which you can boogey to (which is what the mainstream typically focuses on)
You have also take into account that a lot of people who listen to the mainstream form of rap, generally only listen to the beat and hardly take into account the lyrics.
I doubt however.. that if you listen to say 2Pac or Biggie that somehow will transform you into a misogynst.. or make you more likely to be so.
Don't plame people for becoming morally corrupt because of some tenets of hip-hop having violent or misogynist lyrics.. otherwise you'll have to blame the band 'Cannibal Corpse' for glorifying and endorsing genocide, murder, necrophilia, cannibalism, etc.