I assume you mean shallow as a whole? And not necessarily that every Liberal is shallow in their charity? And when you say that they don't belong to Liberalism, you insinuate they belong, or are owned, by Conservatives. I won't argue that Conservatives donate more, I have seen the numbers. I don't care that Conservatives donate more and I wouldn't care if it were the Liberals who donated more.
There is nothing true of everyone in every group, it is really irritating to have to explain something that simple to you, this may be a little more than you can handle here , I know I don't have the time or the Patience to explain everything in perfect detail.
The difference between pigs and people is that when they tell you you're cured it isn't a good thing.