The band is a party and a half and have floated through Ottawa at least once for the Bluesfest back in 2011.
They are hard and they are core and their fan base is pretty white and pretty Celtic. But they are not Nazis, except for this fool who got a faceful from Ken Casey who sings and plays bass for the Murphys.
Things did not go well for Mr. Heil Hitler as the Rocks Off website reports:
It was St Patty's [sic] Day week, the shows were packed, and people were getting drunk. And Rowdy. Really Rowdy. As has become tradition the band invited the ladies to come onto the stage for their encore of "Kiss Me Im Shitfaced" 50+ ladies made it past the barricade and onto the stage and danced the song away. The band then kicked into "Skinhead on the MBTA" and a ton of dudes werre [sic] getting past security and the stage ended up being packed tighter than the underside of a real man's kilt. As the band kicked into T.N.T. by AC/DC some moron started seig heiling (the nazi salute) in time to the beat.Ken Casey noticed this and ran right over to the guy, smashed him in the face, took off his bass and hit him with that and then jumped on him and all out chaos ensued. We could only assume from our vantage point that said nazi got his ass kicked. About 30 seconds later Ken emerged from the pileup with his shirt torn and made his way back to the front of the stage. He strapped on his bass and said into the microphone "Nazis are NOT FUCKING WELCOME at a Dropkick Murphys show."