If the Cumulative Voting system works purely to balance out ethnicity then of course it's racist - it's a kind of political ethnic cleansing.
If one used the Equal and Even Cumulative Voting then I believe that is a fair system based on your order of preference for candidates.
However, as described, Cumulative Voting smacks of 'positive discrimination' in employment, but we must always remember that if you are white, ipso facto, you are racist and these laws are never made for white citizens, even though Caucasians are now a minority in the USA and have been since 2000. (Doesn't that sound Racist, eh? :laugh
One of the things I always thought America had right was the willingness (nay eargerness) with which it's citizens declared their 'Americanism' whatever their ethnic background. These artificial PC laws seek to balance the unbalaceable and give power to a minority, not only against the Constitution but also the fundamental principles of democracy, a concept which many hundreds of thousands of Americans have given their lives for.
Local issues should be dealt with in a common purpose as citizens, not on racial grounds. It's a recipe for disaster in my opinion.
Of course I may have this all wrong and would be interested to get other views on the subject.
I am not dogmatic about any subject and welcome debate so please don't set fire to me - it's not hard and fast. I love learning...
In England, I notice it was ONLY used to elect some school boards. I think we probably had much more 'voting irregularities' than Cumulative Voting back in the day!