Tens of thousands of farmers and agricultural workers marched towards the Indian parliament Friday demanding debt waivers and higher crop prices, putting pressure on Prime Minister Narendra Modi ahead of 2019 elections.

More than 300,000 Indian farmers have killed themselves in the last two decades mainly because of poor irrigation, failed crops and being unable to pay back loans.

Farmers from across the country flooded by train and bus into Delhi since Thursday to mass in the capital city’s Ramlila Grounds before marching to parliament.

Organisers said some 80,000 farmers and farm labourers were participating in the two-day agitation that will culminate with a petition to the Indian president after the march was stopped half-a-mile ahead of the parliament house.