Use "public presentation" in a sentence

1. Obama, when he was attempting to foster a ‘right to same-sex unions/marriage’ in Africa at public presentations; he was nicely told to ‘pedal his misguided thoughts somewhere else’!!

2. Underwood as she was now described, especially given her breeding that she had revealed to Lady Jane; it was as if she were two different people—one for public presentation and the other for private