Around the world , 600,000 took part in demonstrations in favour of a strong agreement , such as the Global Climate March organized by 350.org ( and other events such as Alternatiba , Village of Alternatives ) . Paris had a ban on public gatherings in the wake of recent terrorist attacks ( state of emergency ) , but allowed thousands to demonstrate on 12 December against what they felt was a too-weak treaty . There was also an illegal demonstration in Paris , including violent clashes between police and anarchists , ten policemen were injured and 317 people arrested
recent terrorist attacks
November 2015 Paris attacks
2015 United Nations Climate Change Conference