Who exactly are we?

A man in a black suit and tie stands in a room with a crowd behind him, his mouth slightly open as if speaking. The scene cuts to a close-up of a bearded man in a military uniform looming over another man in a dark setting, then to a man in a light blue uniform looking forward with a serious expression. The sequence returns to the close-up of the two men in the dark, with the bearded man's face dominating the frame.