I personally take politics seriously because it affects my country and the people in my country.
The reason I tend to judge others based on their politics is because of their choices.
If the way you think and speak belies a patent disregard for the less fortunate, I, at least, will attempt to hold you accountable for it. I don't think all people with opposing views are evil or idiotic, which is why I attempt to change their minds.
I do feel, however, that people succumb to the less-violent equivolent of a mob mentality when they are confronted with what seems to be a common enemy. It seems that anyone who oppose the incumbent's party in this country is the enemy, which is why the "right" seems to be so organized.
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The giant three-phallused phallus of Uzbekistan will one day squirt the cosmic jizz of revenge all over Canada.