Caracas - Venezuelan's opposition said more than 7.1 million people responded to its call to vote on Sunday in a symbolic rejection of President Nicolas Maduro's plan to rewrite the constitution, a proposal that has raised tensions in a nation suffering through widespread shortages and months of anti-government protests.A 61-year-old woman was killed and four people wounded by gunfire that erupted after government supporters on motorcycles swarmed an opposition polling site in a church in the traditionally pro-government Catia neighbourhood of western Caracas.Analysts said the vote for the opposition across Venezuela and the country's far-flung diaspora was an impressive show of support. However, it fell short of the opposition's 7.7 million-vote showing in 2015 legislative elections and the 7.5 million votes that brought Maduro to power in 2013. Opposition leaders said that was because it was only able to set up 2 000 polling places in a largely symbolic exercise that the government labelled as illegitimate. Still, some supporters said they were disappointed."I thought it was going to be more," said Mariela Arana, a 56-year-old school counsellor. "But these seven million people spoke and it was plenty."International communityDavid Smilde, a Tulane University expert on Venezuela, said Sunday's results would likely rally the international community even more strongly against the July 30 vote Maduro has called to elect members of the assembly that will retool Venezuela's 1999 constitution.The opposition says that vote has been structured to pack the constitutional assembly with government supporters and allow Maduro to eliminate the few remaining checks on his power, creating a Cuba-style system dominated by his socialist party.Canada and Mexico were among the countries that issued statements on Sunday evening lauding the opposition vote."Overall this vote, I think, makes it difficult for the government to just proceed as planned," Smilde said. "I think it's going to embolden the international community to reject it."Late on Sunday Foreign Minister Samuel Moncada said on Twitter that he was declaring former Mexican President Vicente Fox persona non grata and banning him from the country for conspiring to promote violence and foreign intervention. Fox travelled to Venezuela on Saturday with a group of Latin American former presidents to show support for the opposition referendum. Moncada offered no evidence to support his accusations.ViolenceThe day was marred by violence when pro-government paramilitary groups attacked voters outside the Our Lady of Carmen Church around 15:00, according to the opposition mayor of the Caracas borough of Sucre, Carlos Ocariz. The chief prosecutor's office said Xiomara Soledad Scott, a nurse, had been killed and four others wounded in the incident.Video posted to social media showed massive crowds outside the church, then hundreds of people running in panic outside the church as motorcycle-riding men zoomed past and shots rang out.Maduro made no mention of the incident in comments on state television shortly after the official close of opposition polls at 16:00, but he called for an end to violence that he blamed on the opposition."I'm calling on the opposition to return to peace, to respect for the constitution, to sit and talk," Maduro said. "Let's start a new round of talks, of dialogue for peace."In what appeared to be smaller numbers in many parts of the capital, government supporters went to polling stations in a rehearsal for the July 30 vote."Our president Chavez supported the poor, the people," said Yveth Melendez, a 41-year-old homemaker waiting outside a school in the south Caracas neighbourhood of El Valle, a stronghold of government support that has been weakening in recent years.Force, not democracy "Today we're following his legacy, with President Nicolas Maduro ... The constitutional assembly is something that benefits the people."At an opposition site nearby, Juan Madriz, a 45-year-old insurance company employee, said he didn't object to rewriting the constitution per se, but rejected Maduro's decision to do so without putting that decision to a vote, as his predecessor Hugo Chavez did."If they're forcing us, it isn't democracy," Madriz said.Isabel Santander, a 67-year-old retired auditor, said she was voting against the constitutional assembly as a protest against the country's economic collapse."I signed because there's no medicine, no food, no security," she said. "There's no separation of powers, no freedom of expression."Maduro and the military dominate most state institutions but the opposition controls the congress and holds three of 23 governorships. The country's chief prosecutor has recently broken with the ruling party.The opposition called backers to 2 000 sites across the country to fill out ballots featuring three yes-or-no questions. Do they reject the constitutional assembly? Do they want the armed forces to back congress? Do they support the formation of a government comprised both of Maduro backers and opponents?Opponents of Venezuela's government blame it for turning one of the region's most prosperous countries into an economic basket case with a shrinking economy, soaring inflation and widespread shortages. The government blames the crisis on an economic war waged by its opponents and outside backers.