Why do awful bully type people always target me?

Okay, i havent been bullied to the point of becoming suicidal, but I have found that the people with insecurities, people who like to put others down, etc. basically UGLY people, who (IMPORTANT PART) who usually tolerate everyone else with ease and at least act FAKE NICE to them, why do they always target me instead of treating me at least "Fake nice"?? I know I am a very nice person, but what can I do to recognize these types of people and to push them away? I want to know because I am sure I will meet these sort of insecure ugly people a lot especially when I start working (aka real life).