Who then prefers to kill via drive-by shootings other than liberals? Most of this type of thing is done by people of liberal bent that would much rather see a liberal political ideology reign than one of strict constitutionalism and conservative values. We all know the punishment would be much more severe under a completely conservative political landscape because the laws would have teeth and they would be enforced uniformly.
Very unlikely this person is right-wing.
FWIW, consider the majority black vote this last election cycle and follow the ideology...
Using the results of the last election, there's a 95% chance that he is indeed NOT right-wing.