Increase in margin requirements cause silver prices to tank

http://www.zerohedge.com/article/when-banks-dont-results-cme-just-changes-rules-full-revised-silver-margin-schedule

Of course, only margin requirements for non-member speculators were raised, while member firms' margin requirements were not. Gee, while some members are accused of rigging the game, the CME decides to punish the non-members. How's that for justice?