The anti-prorogation protest in London is fizzling out, with only a few hundred activists filtering through the streets outside Parliament.
Another small splinter group marched up the Mall towards the gates of Buckingham Palace, where there is a heavy security presence.
And traffic is at a standstill in Trafalgar Square, where some protesters are sitting on the roads, closely watched by police.
But in truth, the turnout at Saturday's rally will have disappointed organizers. Several thousand people showed up, but the event fell well short of attracting the "hundreds of thousands" of attendees promised beforehand.
Major anti-Brexit rallies have attracted huge crowds in the past, and that level of enthusiasm could well be on show again as the countdown to the October 31 deadline moves from months to weeks.
But just days after a petition against prorogation attracted more than 1.6 million signatures, the modest crowd was something of a surprise.
For Johnson and his team, though, protests and petitions were never likely to force a change in approach on Brexit. More robust challenges to his efforts to suspend Parliament will come during the week -- starting on Tuesday, when lawmakers get to work with attempts to block the prorogation and legal challenges are heard in courts in London and Scotland.