It's not really targeting poor people, or dark skinned people - it's targeting people that the elites of the time saw as 'morally deficient' - most malum prohib

It's not really targeting poor people, or dark skinned people - it's targeting people that the elites of the time saw as 'morally deficient' - most malum prohibitum laws target moral perceptions of moral deficiency - or try to preserve notions of a static society.