Australia’s richest person, Gina Rinehart , called for immigrants’ social media to be screened and said children are being taught to be ashamed of the Australian flag in untelevised remarks before an Anzac memorial service on the steps of Sydney Opera House on Friday. Rinehart’s public appearance was attended by about 4,000 people and sponsored by her company, Hancock Prospecting, and RSL New South Wales. Rinehart claimed the Australian government was wasting money, eroding freedoms, running an ineffective defence force, leaving veterans homeless, teaching children to be ashamed of the Australian flag and doing nothing in response to “death chants”. “Our immigration procedures must only allow immigrants who have been thoroughly checked – including their phones, iPads, laptops and social media,” Rinehart said in a speech later posted online . “We need to protect our country – and welcome only peace-loving, contributing immigrants to our shores. This should not be controversial.…