Respond with hostility and attack the person's intelligence, political views, and accomplishments. Additionally, bring up a Canadian artist and accuse them of disrespecting that artist.
Wow are you ever an idiot. Shame you can't put away your pathetic partisan ignorance for five minutes to honour a great Canadian artist. I'm pretty sure Leonard Cohen would also say you're full of shyte. Donnie raised $2M for brain cancer research while he was dying. What'd you do today, loser?