Video Assistant Referee causes controversy every week in English football, but how are decisions made, and are they correct?

On Sunday, Crystal Palace and Liverpool met in the Community Shield at Wembley, and once again VAR was up for discussion.

The game finished 2-2 , with Palace winning 3-2 on penalties.

Possible penalty: Handball by Mac Allister

What happened: The game was in the 79th minute when a cross was played into the Liverpool area. Alexis Mac Allister jumped to intercept, but he missed the ball and it hit his raised arm -- preventing it from reaching Ismaïla Sarr . Referee Chris Kavanagh ignored claims for a penalty and it was checked by the VAR, Paul Tierney.

VAR decision: No penalty.

VAR review: The handball law has caused much controversy over recent sea

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