A video that went viral on social media shows the moment when a protester climbed and disabled a water cannon truck on Thursday in Valparaiso, Chile.

Demonstrators take part in anti-government protests in Santiago as continuing unrest follows a week of riots, arson and protests over inequality that have resulted in at least 18 deaths and 7,000 arrested, prosecutors said.

Frustrations over the high cost of living in Santiago have become a political flashpoint and have prompted calls for reforms on everything from the country's tax and labor codes to its pension system.

(Source: Reuters)