The wonderful Morgan blogged about St. Patrick. And included full citations. You - each and every ONE of you - should read it. http://lairbhan.blogspot.com/2012/03/st-patricks-day-snakes-and-irish.html
In short: The neopagan "we are eternal victims mythos" about Patrick are not based in fact. They are simply a way to justify neopagans playing the victim card.
Many people are amazingly invested in playing the victim card. A person on Twitter tweeted the "St Patrick committed genocide" thing, I cited sources showing it's not true and asked for HER sources. Turned out the woman is a few sandwiches short of a picnic, and is now accusing me of being a part of the Russian mafia, involved in sex trafficing, just saying I'm in Druid and Wiccan groups because I'm trying to shut her up. And asked "REAL Druids" to "Take Fern Out" (and implied a few times she's going to hex me).
In response I DID get a date offer (we riffed on 'taking me out'). Keeping the joke going I suggested we catch the Trans Siberian Orchestra.