Shocking video footage shows a huge brawl which broke out at a cemetery as thugs fought with machetes, axes and hammers.<br />Seven men have been jailed for the violence at Morriston Cemetery, Swansea, on August 5 last year, which left a number of people with serious injuries.<br />A video clipped released by police shows the men wielding bats, hammers, knives and axes before taking off in a high-speed van chase.<br />The footage caught on the dashcam of one of the vans shows it being driven through rows of gravestones past horrified mourners.<br />Thugs Patrick Joseph Murphy, 40, Andrew John Thomas, 40, Jeffrey Tawse, 23, James Coffey, 45 and John Coffey Jnr, 24, have each been jailed for the attack.