Of course I can. And I do...did you miss my remarks on Mitt Romney, for instance, or my personal opinion of trump, or my opinion of 'birthers,' etc? I call 'em out all the time.
However, I don't remember a liberal ever doing so. I would, y'know, since it would be so singular an event as to cement itself in my memory. You know, like where I was when I heard that Kennedy was shot, when we landed on the moon, when the Challenger exploded, the day my husband died, the instant during his funeral when a woman tried to set me up on a blind date with her son, where I was when I heard about 9-11, the days my kids were born, when I was proposed to, when the Berlin Wall came down....amazingly unique events like those.
....and I can do that, criticize 'fellow conservatives.' See, I'm not a Republican. I'm a conservative libertarian and there are things I don't like about either side.