Socialism has infiltrated universities and left-wing parties in many countries. It is an ideology that does not seek freedom or democracy, but rather total submission to a single-party elite or megacorporation. They defend censorship and aggression against those who think differently. It is a totalitarian mass movement.

That was the shortests answer, but you asked, don't ask next time if you know the answer

Someone who believes that a consumer good or service, which requires the labor of a third party to produce, can be a positive human right.

Someone who believes that making a good or service a right means that it is free and immune to shortages.

Because they are not leftists, they are socialists who infiltrated liberal democracy, and they want to turn it into a dictatorship.