On a global scale, racism is clearly not set in a black/white mold which is the version many are talking about here.
Consider the Asian continent, for example. The dominant power there is not white people, obviously. But it is nonsense to argue that Asians cannot be racist against any other group based on racism Asians have experienced in Europe and North America.
Racism is:
"...prejudice, discrimination, or antagonism by an individual, community, or institution against a person or people on the basis of their membership of a particular racial or ethnic group, typically one that is a minority or marginalized."
And:
"...the belief that different races possess distinct characteristics, abilities, or qualities, especially so as to distinguish them as inferior or superior to one another."
There is no caveat given. Any group of people can be racist to another group of people.
Racism is not defined solely by colour of skin either. Ethnic background is a part of it. For example, a white person can be racist to another white person on the basis of accent, language, customs and so on that identify an ethnic group. Same goes for other groups around the world towards people who otherwise look the same physically.
So, racism is not a one way street. Nothing is literally a one way street, however much some wish to assert it is.