The connection has timed out , The server at Poloniex.com is taking too long to respond.
Seems clear to me? poloniex.com has it's hooks into your computer and can't seem to do a good job spying on you. It's not a government, the owner of your traffic (poloinex.com) is having problems. I'm gona take a wild guess that you are on a windows computer.
I bet too he is on a Windows machine.
However when it comes to government restricting you , this can be bypassed very easily. In fact it's been discussed here several times but let me remind it for you. You go to
www.torproject.org and download the TOR browser. Starts it with the lowest security settings so you can open the websites you are not accessing through your normal ISP.