WordPress/website blank – "Error 500"

My wordpress shows error 500 and I can’t go to either my url http://www.theturbantimes.com or to my wordpress admin login. This error came after I downloaded the plugin “Our Team Showcase 2.42″ and right after that I tried activating the plugin “TLP Team”. So I don’t know which one of those caused the problem but probably one of them did. What do I do?

https://ww.wp.xz.cn/plugins/our-team-enhanced/