When Barack Obama was younger, what are some events that happened?

Same things that happened while everyone else was alive.

How young? Take B-date to whatever date of younger and search for events during that time span.

He was called a black bastard at school, but this is inaccurate since he is mixed race

First you need to find out when he was born and where. Remember he used 2 different 'birth certificates' for 2 different elections. Nobody knows where Barry was born or when, any who do wont say. Maybe ask Michael.