The last court to take a real crack at KKK protests - involving a Klan rally in Louisville - upheld an earlier practice/notion that crowds at such rallies could be split into two sides. In the Court's view, this was an acceptable time, place & manner restriction.
What doesn't happen at Klan rallies is that one group (but not the other) is made to give up its signs or is moved so far away as to not reach its intended audience -- both violations of the First Amendment.
That's not merely opinion. It's what courts have said.
got any court cases that say the other side can be moved only so far? Didn't think so. As you admitted it has been well established that side CAN be seperated, which is all this is doing. Thus you show how the courts agree with me.