Arteaga has been a fixture at demonstrations against President Nicolas Maduro, playing the national anthem on his violin as authorities launch tear gas in his direction. National guard troops in Venezuela's capital have launched tear gas at protesters opposing President Nicolas Maduro's bid to rewrite the constitution. Venezuelan authorities have routinely responded to nearly four months of street protests by using tear gas and rubber bullets to disperse demonstrators. Thousands are gathering in the Venezuelan capital for a march toward the embattled nation's Supreme Court in an escalating push to stop President Nicolas Maduro from proceeding with his plans to rewrite the constitution.