JOHANNESBURG — Seven people were shot dead and one person was seriously injured in an attack by unknown gunmen at a house in Evaton south of Johannesburg, police said on Tuesday. A spokesman said the men had stormed the house about 55 km (34 miles) south of Johannesburg late on Monday. The motive was not immediately known. Four men were arrested and four firearms recovered, the spokesman said. South Africa is one of the world's most violent countries but the... (GunPolicy.org)