I'd probably cut the population in half and destroy the concept of money.
I wouldn't choose one dominant 'race' over another because I think that equality is very important. I'm sure there will still be problems in the future with population anyway but, for the time being, it's a quick fix to a lot of problems. The remaining can work out what's left.
As for the destruction of money, I've always felt that trade is a good form of import and export, even just between people. This means that everyone needs to have a job in one form or another so the poverty rate will either skyrocket to the majority being poor or downward spiral to the masses being satisfied.
Okay, so both are very extreme, but I'm allowed to dream it up.