Is there an academic consensus around capital gains taxes?

This is a bit petty of me, but I'm hoping to resolve a disagreement, and maybe learn something in the process.

Is there an academic consensus amongst economists that either raising or lowering capital gains taxes would be better for society? We can limit this to the US if it simplifies things, but I'm also interested in global perspectives.

Consensus meaning widespread agreement one way or the other, with disagreement only coming from cranks, people who are highly politically motivated (similar to tobacco company sponsored tobacco research, or from fringe economists such as Marxists or libertarians), people who are generally regarded as holding onto debunked theories, etc.