Hundreds of tenants marched across the Brooklyn Bridge on Thursday in a show of force to demand stronger rent laws from Albany, as their advocates called on Mayor de Blasio to push for a rent freeze.

“Zero would be appropriate,” said City Councilman Antonio Reynoso (D-Brooklyn) at a rally in Foley Square. “We’re at critical mass [in being able to afford current rents], especially in my district.”

Reynoso represents the Williamsburg and Bushwick neighborhoods, where rents are up sharply.

The mayor advocated a rent freeze last year, but the Rent Guidelines Board he appoints decided on increases of 1 percent for one-year lease renewals and 2.75 percent for two years.

The increases impact about a million rent-stabilized apartments. This year, the board proposed preliminary increases of zero to 2 percent for one year and 0.5 percent to 3.5 percent for two years.

The final rent hike, if any, will be announced next month.