It may be weeks before we actually know how many patriotic Americans showed up in Washington DC to protest. The estimates by news organizations range anywhere from 60,000 to 2 million.
How in this day and age can there be "respected" news organizations give such ridiculously divergent opinions. The answer is politics. Wapo, NYT etc will diminish this event to the point of lying. Conservatives will latch on to the highest estimates as fact because the want to maximize the significance of the event.
My personal opinion is the number is far closer to the high number than the low. After comparing photo's of similar events and cross checking verified numbers for those, I believe there were somewhere between 500,000 and 800,000 people in attendance. I believe I'm being conservative in that estimate.
Sooner or later some reputable outfit will give us a legitmate number. Until then know one thing, much of the MSM is intentially belittling the event by calling the crowd "in the thousands", or "10s of thousands" and that in itself is criminally disingenuous.