"Hamas is intentionally and cynically provoking this response", he said, adding that "Israel has the right to defend itself". "But we are alarmed, concerned, and profoundly saddened by the growing number of Gazan dead and wounded".
Israel has made clear throughout the protests that it holds Hamas responsible for any violence emanating from Gaza, and Colonel Conricus made no apologies for the body count.
Palestinians say they are protesting against Israel's siege of Gaza and for their right to return to ancestors' homes in Israel.
The spokesperson did not mention the opening of the controversial United States embassy in Jerusalem, which also took place on Monday.
Rabbi Rick Jacobs, left, meeting with Mahmoud Abbas in Ramallah on March 9, 2017.
"Rather than being a step towards peace the embassy opening has acted as a flash point in the conflict and has been used by the Israeli government to justify their massacre of Palestinians".
Vietnam has dismissed claims that it participated in a gala hosted by Israel to celebrate the opening of a new us embassy in Jerusalem. "What happened today, now we've torn that out, it's not there anymore".
Mansour spoke just hours after the ceremony to inaugurate the relocated US embassy concluded.
"We see no objective in America's foreign policy in doing this move", he said.
"Until then, no other country is allowed to move their embassy to Jerusalem and recognize it as the capital of Israel". Trump tweeted: "A great day for Israel!"
Dan Shapiro, the US ambassador to Israel under President Barack Obama, told CBS News foreign correspondent Seth Doane the embassy move could be a good thing, but only if it was paired with a promise of a USA embassy to a future Palestinian state in east Jerusalem as part of a two-state solution.
White House officials have rejected this complaint.
On Monday, Israeli armed forces killed at least 58 people, including several teenagers, as waves of Palestinians tried to burst through the border fence separating Gaza from Israel.
Despite the Gaza violence and Palestinian outrage over the embassy move from Tel Aviv, Shah insisted there was no reason to believe there would be any damage to the Trump administration's Israeli-Palestinian peace efforts.
It's "an exciting event and day for us", said Guy Gilady, deputy consul general of Israel in Miami, who also expressed concern about the escalating violence in Gaza, about 50 miles from Jerusalem.
Israeli PM Benjamin Netanyahu defended the brutalities committed by his military saying that it was acting in self-defence against Gaza's Islamist rulers, Hamas, who he said wanted to destroy Israel.