If the half-a-million regular men and women and the dozens of celebrities marching on Washington today don't have President Donald Trump's feathers ruffled, one marcher in attendance might be the last straw.

Josh Kushner, brother of Ivanka Trump's husband Jared Kushner (who also happens to have been named as one of Donald Trump's senior advisers), was spotted among the pink hats and placards by Washingtonian's Jessica Sidman.

Sidman said another marcher spoke to Kushner, asking if he was indeed Jared Kushner's brother.

"He (reluctantly) admitted yes, said he was 'observing'," Sidman tweeted.