Ok, how about casts a shadow on it? Calls it's legitimacy into question as it implies we wouldn't hold her in the same regard if she looked different. We think highly of her, but because our judgement is tainted by racism her value is inflated over that of identical accomplishments by people who look less western than her daughter. Personally I think Ma stepped in it, and it stinks.
Like
@LogicalInsanity said, Tank Man is universally respected/admired and would be no matter the colour of his skin. While we tend to identify more with people who resemble us, courage in the face of overwhelming odds is a universally admired trait.