The photo on the right was taken on the Mall from 7th St NW facing East toward the Capitol. This is always where the bulk of protesters congregate. The most generous mainstream media estimate of the number of people present was 70,000.
Thus we would have the people in the photo on the right, based on the media data from the photo on the left estimated at over 560,000. Conversely, basing the photo on the left from the media data on the right we have 93,000 people.
The photo on the right is a group, mostly white, protesting higher taxes, the Obamacare plan and bigger government: Sept. 13, 2009. The group was organized on a few weeks notice with no money by talk radio and the Internet.
The group on the left are the Million (Black) Man March organized by Louis Farrakhan on Oct. 16, 1995 with millions of non-profit dollars and six months in the organizing. Farrakhan publicly hates whites and within the category white, particularly hates Jews.
The Constitution counted blacks at 3/5ths of whites. The modern mainstream media have whites counted at 1/8th of the value of blacks. Considerable progress for black Americans in 200 years.
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P.S. Based on the comments below, my estimate is right. Blacks count 8 times more than whites in today's legacy media. The conservative march was twice as big as the black man march which was a disaster promptly covered up by Congress passing laws prohibiting future accurate crowd measurements.