Do you just want to use "sets of haplogroups with similar phenotype" instead? I mean, you can argue all day that the existence of the orange color somehow means that there's no difference between yellow and red, but you're just going to look foolish.
I suggest not using racist junk but ethnicities instead.
You made a statement about the concept of races in general. Of course people can use races to be racist, yes. People can use sexes to be sexist too.
I think you may want to read a bit about it, Wikipedia’s article on human races is a good starting point.