Markjay, if race has no firm definition, how can anyone be "Racist"?
Correct, and this is why people always seem to be accusing others of being 'Racist' but they never see themselves as being ones...
A better word would probably be Stereotyping. This implies that you assume a person will behave in a certain way or posses certain traits just because they belong to certain group.
The problem is that it is not logically flawed. If (say) most paedophiles are indeed middle aged white men, then yes you would reduce your chances of actually meeting one in person if you decide you do not meet any middle aged white men, ever....
The obvious issue is that in doing so you will be discriminating against very many middle aged white men who are not paedophiles.
The question is not only if most dodgy car dealers in Bradford are of certain ethnic origin. The relevant question is also what percentage of those ethnics in Bradford are dodgy car dealers?
If the answer to the first question is that the vast majority of car dealers in Bradford are of certain ethnicity and are also dodgy, then don't buy a car in Bradford because the probability of getting ripped-off is high. Fair and square.
But at the same time, if the answer to the other question is that overall only a minority of those ethnics are dodgy car dealers, then there is no reason to discriminate against others of the same ethnicity just because a tiny minority are doing things they shouldn't.
Stereotyping is justified when the statistics support it, e.g.:
Most lions are dangerous, so you would probably be better off shooting one if it is fast approaching you.
But only a tiny minority of dogs are dangerous, so you would be acting very unreasonably if you fired at any advancing dog you encounter.
To me, Racism is the process of applying certain misconception to an entire group of people when in fact these are either completely wrong or in reality apply only to a minority of members of that group.
And since I don't know what 'Race' is anyway, it matters not what the said group has in common - same gene pool, same gendre, same sexual tendency, same religion, same profession, or just living in the same county or city.
As long as they have something in common that can identify them as a 'group', and the negative traits of the few are then pre-applied to all members of this group, I would consider this to be 'Racist'.