An ecumenical milestone in Boston: Fifty years ago, the late Richard Cushing became the first Catholic cardinal in the country to speak at a Protestant church. Last weekend, Boston’s current archbishop, Cardinal Sean O’Malley, remembered that occasion by visiting the same United Methodist Church. The clergy were recalling Jesus’ baptism by putting drops of water on people’s foreheads. Unexpectedly, O’Malley asked the church’s senior minister to anoint him. The Reverend Anne Robertson was happy to do so.