What logical fallacy is the argument "I have a RACE friend, so I can't be racist"?

For example, some people will make dumb points when trying to defend their racism by saying something like "I have black friends, so I can't be racist against blacks".

What kind of logical fallacy is this? Is it just a flawed argument?

What logical fallacy is the argument "I have a RACE friend, so I can't be racist"?

For example, some people will make this point when trying to defend a comment they made:

PERSON A: "I think all black people are worthless individuals!"

PERSON B: "Well that's actually quite racist.

PERSON A: "Well actually, I have black friends, so I can't be racist."

What kind of logical fallacy is this? Is it just a flawed argument?