Fallacy

The fallacy I choose is the Mistaking the person (group) for the argument / (Almost) any argument that _____ says about _____ is bad.  So the fallacy means that if a person you name  has an argument and presents their argument, then they present their argument you then claim that person is usually bad.   An example of this:  Any argument that John says about PETA is bad.  Meaning that anytime ‘John” has an argument for PETA then it is a bad argument, he doesn’t have enough claims to back up his argument, and so it won’t mean that his argument will be good.  You could identify the “strawman” in this situation; you can easily claim that someone else’s argument is not good, and can put words in the other person mouth which then misrepresent’s their argument, you do not have enough claims to back up your reasoning for why “John’s” argument is bad.