It's not exactly unusual for a reporter's segment to be interrupted by a member of the public, and it's rarely a comforting experience for them.
Not only is this because they're trying to meet what is likely a tight deadline (and that's when they're not actually live), but it's sadly not uncommon for these passers-by to harass them or make them feel unsafe in other ways. In one case, a reporter was even hit by a car during a live feed, though she was fortunately OK.
For all of these reasons, it was a welcome change of pace for so many that one grumpy journalist's report was interrupted by his own loving mother.