CLEAN : Conservative conference delegate slapped by Chinese reporter

The speaker recounts an unexpected confrontation with a woman who reacted violently to a request to leave. Despite the shock, the incident led to healthy discussions about freedom of expression and differing opinions on the actions of the Chinese Government. The speaker emphasizes the right to express opinions, while noting that the British public may not find certain statements reasonable.

What barriers does the speaker mention in relation to discussions?

What does the speaker imply about the British public's perception of the statements made by the woman?