It varies, there are the digital moralists\altruists, like the pervert liberals who have been outted in recent months (Kevin Spacey the **** for example, or the long list of male feminists who have been outed) who tweeted that Trump's grab the pussy tape was revolting and horrible, only to be slammed with claims of sexual assault themselves only months later.
Then there are the pathological altruists who RAGE and share DISGUST about people, holding them to inhuman sterile nuance-less standards no human achieves, while not even coming close to meeting those standards themselves. The Luis Suarez Evra thing brought them out of the woodwork
Then there are just good old moral grand standers who are in situations where they can afford to meet the standards others can't, like JK Rowling and Lilly Allen (who both live in the whitest parts of Britain you can find) on mass unchecked immigration for example, who never ever has to deal with the consequences while those that have issues with it, do have to deal with the consequences.
There are several levels.
pathological altruism is defined maybe as shameless lying altruism, holding others to standards YOU KNOW you have NOT met yourself, and vilifying them for not meeting those standards you KNOW you can't meet