This year marks the 50th anniversary of Gideon v. Wainwright, the Supreme Court's landmark decision requiring the states to provide lawyers for poor people accused of committing crimes. Clarence Gideon, the defendant in that case, wrote his own petition to the high court in longhand, and Tuesday, the Supreme Court is hearing the case of another defendant who, in the longest of long shots, filed a handwritten petition from prison asking the justices for their help.