There only three things irritating me about this incident:
1) If a motorcyclist even gets a dirty look from a car driver then everyone is up in arms and wants to go around handing out PK's and organising gangs to go visit the offender etc. The argument goes that we are more vulnerable on the road and motorists should be more aware and take care because our lives are at stake etc which is actually a reasonable argument (before the discussion descends into PK's etc). But many motorists view motorcyclists (and cyclists) as a nuisance and retort that if its so dangerous we shouldn't be on our bikes on the road in the first place, so they are entitled to behave any way they want. But now the shoe is on the other foot and we behave exactly the same - pure hypocrisy!
2) I have no idea what race the beggar was, and its completely irrelevant, but there are many reasons why someone could land up on the street begging (alcohol, drugs, business failure, family problems, bankruptcy, mental issues etc) and none of us here are immune, other than the grace of God. The underlying theme here is that just because these guys are irritating, and should not be there (which I completely agree with), does not entitle you to mow them down and treat them as sub human which many here seem to be condoning. If you ever land up in that situation then you would hope that others would not do the same to you surely?
3) Saying that you are entitled to cause serious bodily harm to anyone who is in the road that shouldn't be there is also hypocritical, because if your child wonders into the road where they should not be you would expect any motorist to take care and do what they can to avoid them. If a motorist could have avoided your child but instead deliberately ran them over would you say that's OK?
If this was just a simple accident caused by the beggar then it would a completely different situation, but as I understand it, this was just some asshole running over a beggar unnecessarily because the beggar irritated him! The one is an accident and the other is a combination of a number of fairly serious crimes depending on the extent of the injuries to the beggar!