JFK's murder still felt 40 years later

Thousands of people converged on a Dallas street Saturday where U.S. president John F. Kennedy was assassinated exactly 40 years ago.

Many left flowers, flags and messages of mourning near the site – one of several makeshift memorials across the country.

The mood was solemn as people wandered by an "X" on the pavement that marks the spot Kennedy's convertible limousine passed when he was hit around 12:30 p.m. on Nov. 22, 1963.