Anger usefull for case of emergency like wars, even only for short period, in the age of sword, it was enough to protect yourself, better than nothing. One slash, miss, better than nothing, youre killed, or enslaved, your enemy call. Hate usefull for anyone who hurted you so bad so you dont keep beeing hurted again and again and again and youre not dead. What about racism, well, you will not like it if youre not the strongest race. I heard racism good for identifying a dissease or genetical defections like illness, and many things but as a AIDS carrier for example, even youre not AIDS from born, I bet you wont like it if people treat you so bad or discriminate you. You may want to try to live here and proclaim your self as an HIV positive, I bet you will disagree with racism anymore.
Even though there could be some use on racism, there is no need to use racism as a tools to survive, just like anger. Sometime beeing patient make your survival chance higher. With wisdom, your survival can turn to 10,000% higher than anyone, people will ask you to be their leader and gave you their money, and that is how the spiritual leader here started their carrier. Some managing money from donations, and some are scaming their follower for lust and moneys, no one know. But it shown that, racism is not everything for the survival chance. Cooperation is a lot better for surviving.