i maxed out in sing sing last year and i've been all over the state -- attica, sing sing, quentin, all i've been on the island, you know, a lot of times. >> i've been here going on over 20 years, in and out. first started back in 1983, and it's 2004 and i'm still coming back, in and out. i have been here for various charges though. assault charges, grand larceny charges, unauthorized use of a vehicle, stolen property, drug charges numerous times. >> antonio estrella is one of many drug addicts serving time at rikers. >> right now, we're in two main. this is the highest classification inside the facility. what brought me here was in 2003, i got into a fight with a correction officer in 11 main, and since then, my classification is at the highest it could be inside the building. and it will stay like that for five years. and every time i come back into the ntc, i'll wind up back in here. >> how am i living? it's like a zoo in here. they treat us like animals in here. you ain't got no freedom in here. you get told what to do. when to eat. how long you get to eat. you don't get to move out