The culture of lawlessness and escalating gang violence in Middlesbrough which has brought armed police onto the streets of the town is encapsulated in a memorial poster for Cole Worthy, one of the teenagers killed in the catastrophic A66 crash.Next to a photograph of the 17-year-old are the words: 'A life so beautifully lived, deserves to be beautifully remembered.'Only in the dystopian underclass of Teesside – and too many other areas of urban Britain where civil society has all but broken down – could the tragically short time Cole Worthy spent on this earth be glorified in this way.Even in the picture chosen for the poster, to publicise a balloon release 'in his honour', he is making what looks suspiciously like a trademark hand sign signifying membership of a gang.His balaclava-wearing entourage can be seen gesturing in the same way on social media.We now know the posturing wasn't just bravado. Their ilk – and the parents and families who support them – have helped turn Middlesbrough into the most dangerous place to live in the country. The evidence is now being played out on the TV news and news websites in the violence-fuelled aftermath of the crash. No one should have to bury a 17-year-old boy and his friends.But the sole reason Cole Worthy and four of his young associates are dead is because they were in a stolen VW Passat being driven the wrong way down a dual carriageway which was involved in a head-on collision with a police patrol car that resulted in the deaths of PC Matthew Blades, 37, and PC Tom Clough, 38. Louie Leadbeater (right), who was jailed for three years for his involvement in a county lines gang in Middlesbrough, is pictured with Cole Worthy (left), one of the five who died in the A66 crash Cole Worthy (right) with his friend Theo Rae, who died in the A66 car crash last Saturday