Can anyone cite any specific examples of a "liberal bias" in the news media?

Conservatives and Authoritarians have been telling me for the past 25 years that there is a "liberal/left-wing bias" in the "mainstream" news media. Not only have I neglected to notice this alleged bias, I am also very skeptical whether it is possible for a major news organization to systematically staff their newsrooms with individuals who are required to conform to a particular political ideology. I think there is a bias in the news media, but I think the bias can be described as "simplicity," "irrelevancy," and "poor selectivity," but certainly not "liberal." Please respond with specific examples of this allegedly widespread liberal bias.