They did indeed, but despite the great optics of 100,000 people dressed in red shirts 'drawing a red line', it was in realty full of liberals (including several liberal party representatives who voted to send weapons to Israel) who were shouting down activists who tried to start chants of "free Palestine", "from the river to the sea", and other popular slogans we know.
After the march there were several photos of these red-shirted libs in Starbucks and McDonalds, both of which are on the BDS list and have been specifically targeted by activists. Dutch-leftist twitter and instagram has been abuzz about this and there have been quite some pictures, screenshots, critiques, and warnings about yet another anti-Zionist movement getting overrun and watered down by establishment liberals in the 11th hour after so much of their willful blindness.
Meanwhile every other pro-Palestine protest in NL is treated violently by the police, even today the day after the big fancy redshirt protest. To be clear I don't mean that as a dig against Nakba Day, but against the apparent average attendee. I do sincerely hope these libs start to wake up and actually speak up but this march yesterday was an "approved parade".
Please excuse the rant, it's been bothering me all day.