Security forces with black masks and machine guns on the streets of China’s capital are just the more visible side of a security clampdown in the country this month. The heightened security comes ahead of a massive military parade Beijing will hold in the heart of the city next week to celebrate China’s 60th anniversary of communist rule. Many expatriates and savvy locals in China rely on Freegate as well as proxy servers and virtual private networks (VPNs) to bypass blocks that China places on Web sites like YouTube, Facebook and Twitter.”]