Section 151 IPC - Knowingly joining or continuing in assembly of five or more persons after it has been commanded to disperse

What does IPC Section 151 say?

It say whoever knowingly joins or continues in any assembly of five or more persons likely to cause a disturbance of the public peace, after such assembly has been lawfully commanded to disperse, shall be punished with imprisonment of either description for a term which may extend to six months, or with fine, or with both.