Banging drums, chanting and singing, tens of thousands of Victorian school children descended on Melbourne's CBD to demand action on climate change. • They brought part of the city to a standstill on Friday afternoon for their third School Strike 4 Climate protest - this time joined by droves of office workers, public servants, tradies, mothers and babies, and politicians. • Event organisers say 100,000 people filled Treasury Gardens and Spring Street - dwarfing the crowd that attended a strike in March. • Almost 300,000 people marched in cities across Australia for the coordinated rallies - as part of the global movement - but Melbourne hosted the largest turn out. • Time lapse video: Joe Armao Report: Sumeyya Ilanbey, Charlotte Grieve and Paul Sakkal • #climatestrike #climateaction #climate #saveourplanet