As for the renaming, when people are honoured by having things named after them, from time to time it's appropriate to see whether the things they did would still be considered honourable. Otherwise we'd still be referring to Stalingrad and Leningrad.
Stalingrad and Leningrad are not good examples. They both had other names before the Soviets did exactly what you're advocating and swept away history to make way for their new era of equality.
As for the renaming, when people are honoured by having things named after them, from time to time it's appropriate to see whether the things they did would still be considered honourable. Otherwise we'd still be referring to Stalingrad and Leningrad.