Jane Bennett, from Birmingham, talks about coming to terms with the death of her son, after he was killed by a drink diver.
She is backing the West Midlands Police Christmas campaign.
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The exhibition celebrates the contribution of the 11 million people living with disabilities in the UK.
Crowds are expected to gather this evening as an opera performance plays to the masses on a grandstand in the city centre.
The game was invented in the Birmingham between 1943 and 1945.