The marchers were both men and women.  The trigger for these protests was Trump's blatant disrespect for women, but his attitude includes men as well.  His statement during the campaign that most people (except those who carry his genes) are not worthy of his respect  told us just how he will operate.  The people he will take care of are those who have his ear, the wealthy and powerful, those who flatter him.  The rest of us, wage-earners, those on SS and Medicare and a fixed income, are out of luck.