With any sentence that contains a "can't think of people who X" structure, you should realise that people you know and talk to are people who think like you. Ex

With any sentence that contains a "can't think of people who X" structure, you should realise that people you know and talk to are people who think like you. Exceptions don't break the rule, as always – if you do make a statement like that think first if your sample is representative of the population.