Have you ever seen an R go to jail while Ds are in office? Again. The Ds share in the bipartisan consensus to give military surplus to the police, they are fine with cop cities, they are fine with bombing brown people into oblivion, they are fine with couping other governments. They are always an accomplice to the stabbings. Keeping Rs out of office, which you mathematicallly cannot reasonably rely on, will do nothing to stop the stabbings.
The research across decades has shown no reduction of police violence under Democrats and no increase under Republicans. The research has shown corporate profits are higher under Ds than under Rs. Stop believing your bullshit flowchart. It doesn't match reality.