The 'Great March of Return,' orchestrated by Hamas, draws some 30,000 Palestinians to the Gaza-Israel border; riots ensue, prompting IDF snipers to shoot at main instigators; Defense Minister Lieberman warns anyone who approaches security fence is putting his life in jeopardy; Hamas leader Haniyeh: 'Israel's threats do not scare us.'

At least 14 Palestinians were killed and hundreds more were wounded by IDF gunfire along the Israel-Gaza border, Palestinian sources said Friday, as thousands swarmed the security fence as part of "The Great March of Return," called for by enclave's militant Hamas rulers.

It was the deadliest day in Gaza in several months. Nine of the Palestinians were killed during the clashes, a farmer was killed by pre-dawn tank fire in a separate incident, and four others from IDF tank fire at an observation post in the northern Gaza Strip.

The IDF said two of the Palestinians killed were members of Hamas's elite Nukhba force. The military also said all of the dead were terror activists aged 18 to 30. According to Palestinian reports, one of those killed was reportedly 16 while another was 33.

Palestinian President Mahmoud Abbas declared Saturday would be a national day of mourning.

The Palestinian Health Ministry said some 1,000 were hurt by mid-afternoon in the clashes. The ministry clarified those injured included protesters hit by live bullets and rubber-coated steel pellets, while others were overcome by tear gas.

Palestinian health officials said at least 400 of the protesters who were burning tires and throwing stones at IDF soldiers were wounded by live gunfire, while others were struck by rubber bullets or treated for tear gas inhalation. Witnesses said the military had used a drone in at least one location to drop tear gas.

While protest organizers expected some 100,000 Palestinians to join the demonstration, the IDF estimated only about 30,000 showed up.

Organizers invested a lot of resource in free bus services to transport Gazans to the border, the construction of the tent encampments, and an aggressive public campaign among other things, with little results.

In addition, Palestinian witnesses said tens of thousands gathered in tent encampments set up at five sites at a distance of several hundred meters (yards) from the border, but that only some of them engaged in clashes. Read more at YNet