I was actually asked by the Brown and RISD security to remove bikes with U-locks on them cuz they couldnt without either cutting the frame or the bike rack and in exchange for cleaning up their campuses of old abandoned bikes the co-op i volunteer at got all the bikes. and i have no shame or guilt about doing this. cuz a bike that sits too long becomes worthless, and if the person who left it there clearly doesnt want it why not actually get it ridden and used again?