The vast majority of right-wing criticism of BLM is grounded in (sometimes quite overt) racism, as is, frankly, much of the left-wing criticism of BLM.
It's true that criticism of certain things on the left is not dominantly grounded in racism; e.g., while capitalism certainly has racial impacts, the defense by the right of capitalism against socialism and other post-capitalist alternatives isn't grounded primarily in racism, nor is the right-wing assault on feminism grounded in racism.
That's not to say that the dominant basis of those right-wing positions isn't as bad as racism, but it's certainly different from racism.
> You need to realize that for the most part everyone wants the same things.
It may be that most everyone has similar values, but the thought leaders crafting and selling positions (on the right or the left or anywhere else) aren't a representative sample of the population, but a fairly narrow elite, and I guarantee you that the thought leaders of the right and left do not want the same things and differ only on means.
But I also think that the idea that everyone for the most part wants the same things is, at best, inadequately supported and contrary to the readily available indications. There is every indication that there are, on many politically salient issues, fundamental conflicts of basic values and goals, not merely on optimal mechanisms for achieving shared goals.