A man in a white shirt speaks into a microphone as other men gather behind him at a public event.
A man in a white shirt is making a speech in front of a crowd.
A man in the crowd  speaks loudly in to a microphone at a public event.
If the man speaks into a microphone before a crowd, it stands to reason the man is making a speech.
A man in white shirt is making  a speech in front of a crowd in a public event