Following the Port Arthur massacre, Walter Mikac wanted to be left alone. Instead he found himself inadvertently drawn into Australia's gun control debate. The massacre, which happened 20 years ago on April 28 and 29, began an unstoppable movement for gun law reform. Since losing his wife and two daughters in the mass shooting, Mikac has become one of the debate's most potent voices. After the killings Mikac wrote to Prime Minister John Howard, who phoned in... (GunPolicy.org)