The 20-year-old victim suffered multiple stab wounds and died at the scene, say police.
James Powell laughed as minibus passengers begged him to halt a high-speed joyride, a court hears.
The move sparked anger from traders who said it was destroying high street "colour and vibrancy".
Magnus Cort wins a three-man sprint finish at the end of stage 15 of the Tour de France as Geraint Thomas retains the overall lead.
Wales Sevens player Tom Williams misses the final day of the Rugby World Cup through injury following an alleged altercation with a Samoan player.
South Wales Argus
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