Mexicans celebrating an Easter ritual late on Saturday burnt effigies of U.S. Republican presidential hopeful Donald Trump, whose anti-immigrant views have sparked outrage south of the American border. In Mexico City's poor La Merced neighborhood, hundreds of cheering residents yelled "death" and various insults as they watched the explosion of the grinning papier-mâché mock-up of the real estate tycoon, replete with blue blazer, red tie and his …