I do not play CS, that is my friends smurfing.

"My freedom doesn't end where your fear begins"

The reason that the assassins wear suits is because a suit never looks out of place. Whether you're in a fast-food joint or 5 star restaurant, coffee shop or opera, unemployment line or penthouse gala, you can find someone in a suit, and they look like they belong. It's the ultimate disguise for hiding in plain sight.