I can't tell if this comment is serious... What makes you think the White House orders these arrests?
I would imagine that the local Federal offices are happy to arrest people who attempt to burn down a Federal Court house, and would have done exactly the same under Obama, Clinton, Bush, or Trump.
My comment is genuine, but I can't see how yours could be. These kidnappings are not taking place at the federal courthouse, nor in direct response to attacks on it. By default, federal officers don't drive around in camouflage snatching people off the street.
These highly unusual actions are obviously being ordered by the White House. Trump has been pushing various justifications for how the federal government should have jurisdiction to squash the BLM protests. Cities have wisely come around to deescalating the fighting between their local police forces and protest crowds, but Trump has consistently worked to inflame the situation. This is his latest stunt.
I would imagine that the local Federal offices are happy to arrest people who attempt to burn down a Federal Court house, and would have done exactly the same under Obama, Clinton, Bush, or Trump.