Yes, but insisting on calling it bigotry instead of racism rarely makes a difference and frequently causes unnecessary arguments with people who are using the other definition of racism. If it’s necessary to discuss institutional racism or whatever else, then just specify that.
This distinction is stupid and only serves to confuse the discussion
No, it’s a qualitative difference if a member of an oppressed group is bigoted against one of the oppressing group, or the other way around.
Yes, but insisting on calling it bigotry instead of racism rarely makes a difference and frequently causes unnecessary arguments with people who are using the other definition of racism. If it’s necessary to discuss institutional racism or whatever else, then just specify that.