There is a video on the link below .... crazy
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A machete-wielding man was Tasered on a railway station platform as "terrified" rush hour commuters looked on.
Police pinned the man - filmed waving a "massive" blade at Tulse Hill station in South London - to the ground shortly after 18:30 GMT on Monday.
Witnesses described "chaos" as he chased people with the weapon.
A 59-year-old man has been arrested on suspicion of attempted murder and possessing an offensive weapon, police said.
https://www.bbc.co.uk/news/uk-england-london-46871219