However, previous demonstrations in New York have remained mostly peaceful.
Despite two arrests, tensions seemed to have eased on Thursday night compared with the previous demonstrations.
However, previous demonstrations of this disruption used long-range visual apparent-motion stimuli.
After all, their handling of some previous demonstrations in London was condemned as too harsh.
"Our previous demonstrations made no difference, but this one will make a difference," she said.
"We respect the judge's decision," said Luis Felipe Rojas, press secretary for Movimiento Democracia, which had organized previous demonstrations.
Although the government has expressed sympathy with campaigners' motives, previous demonstrations have been met with teargas and baton charges.
Kabir said although previous demonstrations on similar issues were largely dominated by women, men were now protesting too.
Police used aggressive tactics to prevent any repetition of the violence that has marred previous demonstrations against the law.
Some previous demonstrations of artificial leaf technology have shown impressive efficiency but haven't been stable, he says.
We do not expect the protests to dislodge PiS from power, any more than previous demonstrations have.
