The protesters were marking the 44th anniversary of the 1967 Mid-East war.
Several hundred demonstrators - Palestinians and their Syrian supporters - marched to the razor-wired fencing and freshly dug trenches close to the frontier village of Majdal Shams at around noon.
Many carried Palestinian flags and threw rocks and rubbish over the fence.
Israel's military said its soldiers shouted warnings in Arabic and fired warning shots in the air, before aiming at the legs of those who had reached the fence.
After live gunfire failed to disperse the crowds, Israeli troops fired volleys of tear gas over the border. Many people fled while others lay on the ground.
http://www.bbc.co.uk/news/world-middle-east-13660311
Note: Update Record,5 June 2011 Last updated at 16:29 GMT