More than 100 Palestinians have been killed since the demonstrations began on March 30. Hamas said Wednesday that 50 of its members were among the 60 people who died during Monday's violence.
Israeli Prime Minister Benjamin Netanyahu said Hamas should be held responsible for the deaths in Gaza.
"They're pushing civilians women children into the line of fire with a view of getting casualties," Netanyahu told CBS News. "We try to minimize casualties. They're trying to incur casualties in order to put pressure on Israel, which is horrible."