I have been seeing a few times on here lately how a critic of the LDS faith will post an experience or two with LDS and seem to imply that all LDS are like that. I have also personally talked to others critical of the church and found that they too present an experience or two as representative of the LDS as a whole. I wonder, is this normal for all Christians or is it just the critics of the LDS faith?

Also, would it be proper to portray this sentiment in reverse? Should I extrapolate that all Christians are mean, or rude, or insincere because I've personally experienced that from my dealings with a few Christians?