Newser reports a new video shows Arnold Schwarzenegger being assaulted during a public appearance in South Africa. The video posted by eNCA shows the 71-year-old actor filming children at a sporting event in Johannesburg, when a man kicks his back forcifully. Schwarzenegger stumbles and the man is grabbed by security. Schwarzenegger later posted on Twitter, writing, "Thanks for your concerns, but there is nothing to worry about. I thought I was just jostled by the crowd, which happens a lot.