Former Greens senator Scott Ludlam and another Extinction Rebellion activist have had bail conditions banning them from participating in more climate protests promptly thrown out by a magistrate.

High-profile barrister, Greg James, QC, who represented Mr Ludlam and protester Kim Warner, said during a short application at the Downing Centre Local Court on Thursday that the conditions were designed to lock-down political expression of those in the movement.

"In effect, the conditions are drafted so widely as to try to stifle legitimate political protests," Mr James, a former NSW Supreme Court judge, told Deputy Chief magistrate Jane Mottley.

Mr Ludlam, who was among dozens of protesters arrested in Sydney on Monday, was banned by police from going within 2.5 kilometres of the CBD and from attending further rallies. Ms Warner was barred from showing up at future protests and from associating with other protesters.