I think you found a 'trend' in the Republican party.   But I still know many Republicans who are not racist, or at the worst, would certainly would be sincerely hurt to be thought of as racist.  

Yes, I know, ignorance is not an excuse.   Getting a person to recognize their race bias can be very hard.   It doesn't help to make such people fearful of retribution if they address they are own attitude.     It's similar to an addiction, shame will drive them into hiding and denial.    *I don't expect any reform on a public website, I just hope for a little doubt in their conviction. 
+++++++++

I'm not willing to stereotype a group as large as the Republican party.    I don't think what they have done is racially motivated, I think it's all about holding power and getting votes for ANY reason that keeps their party and the money behind it,  perking along.    They see poverty as a weakness in character.  Self-interest apparently only counts if you meet a monetary threshold.