The modern liberal vice is to think that everyone can be taken care of, and/or to rule out foreigners from the relevant moral universe.This is why my posts on immigration are normally directed at leftist types (of course those on the right are evil and cannot be reasoned with). Leftists enjoy being on the side of the poor and oppressed, they are keen on giving truck loads of their tax money to poor countries yet they scream bloody murder if you suggest loosening immigration restrictions because it depresses the wages of local unskilled workers. A leftist will often not be able to understand that a $2 an hour job could be a desirable step for some people. They think keeping them out is much better than allowing them to be "exploited".
Anyway... what was my point? Oh yes, the vegetarian vice.
Vegetarians can be pretty confrontational and self righteous, but so can just about every religion or cause you can think of. Vegetarians often apply their ethical standards inconsistently; I am more concerned about consistency than exactly where I draw the line between what is acceptable and what is not. Vegetarianism is also almost indistinguishable from environmentalism. I think the connection between animal rights and carbon emissions is pretty loose, but some people are surely put off vegetarianism because of its association with activism.