PM heckled during Waitangi speech

A protestor's speech, a scuffle, and a few scathing comments. The coalition leaders were heckled at Waitangi today as they made their election-year pitches - but it wasn't smooth-sailing for the opposition either. MPs were formally welcomed to the Treaty Grounds on the eve of the national day - the prime minister making his return after skipping last year. Craig McCulloch reports.