DENVER — Hillary Clinton on Tuesday proposed letting entrepreneurs defer making student loan payments in order to create jobs and stimulate growth. “We need more job creators and we need more young people starting businesses,” the presumptive Democratic nominee told a crowd of coders inside a Denver tech incubator that houses several startups. Clinton also called for connecting every household to high-speed Internet by 2020 and training 50,000 new computer science teachers. Clinton argues that rebuilding the middle class requires government aid for higher education and job training. Both lace their speeches with populist attacks on Wall Street and descriptions of the economy as “rigged,” though Trump, aiming to draw supporters of Democratic candidate Bernie Sanders, has done so more than Clinton.