In the dizzying heights of Cochabamba, Bolivia, in 2000, Oscar Olivera together with others waged a popular resistance that came to be known as the Cochabamba Water Wars- a struggle against the privatisation of Bolivia’s water; including its rain water. 
Katika milima Cochabamba, Bolivia, mwaka 2000, Oscar Olivera akishirikiana na wengine walianzisha vuguvugu maarufu la upinzani lililokuja kufahamika kama Vita ya Maji Cochabamba -Mapambano dhidi ya hatua ya Bolvia kubinafsisha maji; ikiwa ni pamoja na maji ya mvua.