It was bad enough when Senator Scott Brown voted to roll back the Clean Air Act and then lashed out against folks who criticized his vote.

Now the MBTA is blocking climate activists from running ads in the subway that call out Senator Brown about that same vote.

The MBTA has made this mistake before – forgetting that as government agency they can not reject ads because they feel it is controversial.  They should take the ad money the activists are offering – run the ads and concentrate on providing transit service, not acting as a censor that is reviving the bad old days of “Banned in Boston.”