Colombia tax protests: six dead as marchers clash with police for fourth day

Plan for sales levy on public services and food sees huge demonstrations end in violence, burning of buses and looting

Thousands of Colombians have taken to the streets for International Workers' Day marches and protests against a government tax reform proposal, in a fourth day of demonstrations that have resulted in at least six deaths.

Unions and other groups kicked off marches on Wednesday to demand the government of president Ivan Duque withdraw the proposal, which originally imposed sales tax on public services and some food.