system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why everyone is so scared of a terrorist attack at the olympics?

Edit: sorry for the bad grammar: 
Why is everyone so afraid of a terrorist attack at the olympics?
gpt
* There have been two terrorist attacks in Russia recently

* The group that perpetrated those attacks has said they were planning an attack at the Olympics

* Sochi is near places where a lot of terrorist activity goes down

* There's a lot of people in one place expecting joy and celebration, which is a prime target for a terrorist attack. 

* The security in Russia right now is pretty weak, because Russia as a country is kind of a shithole right now. 

* There was a terrorist attack during the 1996 Olympics, and the security there was far tighter than security at the Sochi olympics. 

Generally it's just a big, almost-perfect storm for a terrorist attack to go down. It may not happen, and it probably won't, but it's definitely a possibility.