The US spy satellite USA 193 was intercepted and destroyed by a missile on February 21st, 2008.
No satellite has weapons on them, but there are some that can protect us from missile launches by detecting them (but the satellite cannot shoot it down).
No. Satellites can't really be made that large or they won't go into orbit effectively. The satellite you're probably referring to is the US spy satellite that is being shot down. It is not responding to commands and will not attain the correct orbit. To prevent the military secrets from getting to other countries, the US is going to shoot it down and retrieve the parts. Another reason for the shoot-down is ostensibly the use of a hazardous substance on board.
An earth terminal transmits data up to the satellite. The satellite can then either shoot it right back down in its footprint to another earth station where the data was meant to go. It can relay it directly to any amount of other satellites and then down to the other earth terminal you were wanting to talk to. Or it can go up to the satellite, back down to another terminal, up to another satellite, and then down to where you wanted to "talk" to.
An anti satellite missile is designed specifically to shoot down objects in orbit outside of the Earth's atmosphere (these objects are satellites). Anti ballistic missiles are designed to shoot down ballistic missile threats, which for the most part are within the Earth's atmosphere. The two missiles will most likely differ in warheads, aiming and guidance systems, and propulsion.
Shoot you Down was created in 1989.
The duration of Shoot Down is 1.42 hours.
Satellite - US band - was created in 2010.
Shoot the Sun Down was created in 1978.
Shoot Me Down was created on 2006-11-13.
Shoot Down was created on 2007-03-03.
Down in the Shacks Where the Satellite Dishes Grow was created in 1992.
Shoot Down the Stars was created on 2007-05-11.