` At first the atmosphere was happy but anarchic , Police mark alcohol ban on London subway ##s , cause chaos . Police say at least 17 arrests , subways stations shut as thousands gather . Many had learnt of the event through social media Web sites . London mayor says he supports alcohol ban for better traveling conditions .
Police mark alcohol ban on London subway ##s , cause chaos . Police say at least 17 arrests , subways stations shut as thousands gather . Many had learnt of the event through social media Web sites . London mayor says he supports alcohol ban for better traveling conditions .