Bolivarian National Guards shield themselves from a jar of fecal matter flying at them, thrown by anti-government protesters in Caracas, Venezuela, Wednesday, May 10, 2017.
The latest violence comes after the death of a motorcyclist who was shot in the head in Caracas. He had recently graduated from Santa Maria University with a degree in communications.
The unrest has killed at least 37 people since early April, including protesters, government sympathizers, bystanders, and security forces.
Everyday thousands of protesters take over the streets and everyday they are met by police trying stop them.
Venezuelan police hit opposition supporters with water cannons in Caracas. Opposition leaders charge the move is a ploy to keep the president and his allies in power.
"They use their weapons against us, so people are using what they have", said lawmaker Rafael Guzman, who on Monday was seen in the thick of tear gas throwing a canister back at security forces.
The protest turned violent when demonstrators were blocked by national guardsmen while trying to deliver a letter expressing their disdain for socialist President Nicolas Maduro's push to rewrite the nation's constitution.
On Wednesday he went a step further saying some of them wanted to "defend the constitution".
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Defense Minister Vladimir Padrino Lopez told Russian broadcaster RT that the armed forces are concentrated on their "constitutional work" and that any suggestion that their loyalties are divided is an attempt to promote a military uprising. It said 11,466 babies died in 2016, up from 8,812 the year before.
Maternity deaths increased by two-thirds meanwhile, according to the data published by the ministry. That's their weapon. Now they have another weapon: "excrement", said a 51-year-old dentist preparing containers of feces in her home for protesters to launch at authorities.
A recent report released by the Health Ministry says that the number of women who died in childbirth in 2016 reached 756. And confirmed cases of malaria in the country increased 76 percent from the year before.
The collapse in prices for Venezuela's crucial oil exports has left it short of cash to import medicine and basic goods.
Venezuelans say they must treat themselves at public hospitals.
Last week, Venezuela's ruling party was forced to play a video of jailed opposition leader Leopoldo Lopez on state TV after rumours spread that he had died in prison. It wants the 2018 presidential vote be brought forward.
"Another Venezuelan that this government robbed of his future", said Stalin Gonzalez, an opposition legislator.
Protesters tried to get around the officers by finding another route but were pushed back by heavy clouds of tear gas in a raucous exchange that continued for more than an hour, witnesses said.