http://twitter.com/#!/lhoops/status/456116185042403328 Actor Adam Sandler was at the Reagan Library for a daddy-daughter field trip, of course: http://twitter.com/#!/ronaldreagan40/status/456216181280477184 When that piece of the Berlin Wall arrived for display, President Reagan said, “Let our children and grandchildren come here and see this wall and reflect on what it meant to history. Let them understand that only vigilance…