In the blocks surrounding the White House, signs reading "Love Trumps Hate" and "Build Bridges Not Walls" littered the sidewalks on Sunday, the detritus of the Women's March protesting the policies of President Donald Trump.

Both Trump's supporters and women and men who took part in the massive march against him in Washington on Saturday contemplated the vestiges of protest and ruminated about the convulsive first 48 hours under the Republican president.

For Mary Forster, who joined her first political demonstration on Saturday, the weekend only reinforced her worries that the country was splitting further apart after a bitter election.