Ezzedine al-Qassam Brigades

TOPSHOT - Palestinian members of the Ezz...TOPSHOT - Palestinian members of the Ezzedine al-Qassam Brigades, the armed wing of the Hamas movement, take part in a gathering on January 31, 2016 in Gaza city to pay tribute to their fellow militants who died after a tunnel collapsed in the Gaza Strip.  Seven Hamas militants were killed on January 28, 2016 after a tunnel built for fighting Israel collapsed in the Gaza Strip, highlighting concerns that yet another conflict could eventually erupt in the Palestinian enclave.  / AFP / MAHMUD HAMSMAHMUD HAMS/AFP/Getty Images

Muhmud Hams/AFP

Palestinian members of the Ezzedine al-Qassam Brigades, the armed wing of the Hamas movement, take part in a gathering in Gaza city to pay tribute to their fellow militants who died after a tunnel collapsed in the Gaza Strip 

A Palestinian man rides a motorcycle wit...A Palestinian man rides a motorcycle with his children past masked militants of Ezzedine al-Qassam Brigades, Hamas's armed wing, as they parade in Jabalia refugee camp, northern Gaza Strip, on November 14, 2013, during an anti-Israel march as part of the celebrations marking the first anniversary of what Israel named the "Pillar of Defence" Operation. AFP PHOTO/MOHAMMED ABEDMOHAMMED ABED/AFP/Getty Images

Mohammed Abde/AFP/Getty

A Palestinian man and his children ride past militants from the Ezzedine al-Qassam Brigades, the armed wing of Hamas, at an anti-Israel march in the Jabalia refugee camp, Gaza Strip.