Antisemitic attacks are on the rise through Europe. Synagogues have been attacked in France. And tens of thousands spewing antisemitic nonsense and carrying placards with such messages as "Well done Israel. Hitler would have been proud" marched across central London to take their slogans to the Israeli Embassy on Saturday. Because Israel have entered Gaza.
Hamas have been firing rockets into Israel for months. They have ignored every plea for a ceasefire. They continue to fire rockets in quantities. Israel has installed bomb shelters. Israeli civilians have 15 seconds to gain shelter after the alarm sounds. Faced by the provocation, Israel began to respond.
There are no bomb shelters in Gaza. Hamas have placed their rocket launchers in built-up areas. They use women and children as human shields. They tell people to ignore Israeli warnings to evacuate targets, made by leaflet, telephone. text and pre-strike explosions.
Hamas know they cannot defeat Israel militarily. The more Palestinian casualties there are, the more they can expect international sympathy.
As evidenced by the rally in London at the weekend.
Writes Douglas Murray at the Spectator: "Thousands of anti-Semites have today succeeded in bringing central London to an almost total standstill. . .
"These are the people who stayed at home throughout the Syrian civil war, stayed at home when ISIS rampaged across Iraq, stayed at home when Boko Haram and Al-Shabaab carried out their atrocities across central Africa and showed no concern whatever when the Muslim Brotherhood was running Egypt into the ground. Yet they pretend to care about Muslims
"And here they all are, coming out to scream because Israel is carrying out the most specific and targeted campaign in the history of warfare in order to stop Hamas - a group dedicated to the annihilation of all Jews - from firing thousands of rockets into the Jewish homeland."
The rally was evidently organised by the Stop the War Coalition, whose website sports headlines like "Israel's invasion is a pre-planned atrocity that makes a mockery of ceasefire 'offers'" and "Western powers that arm Israel are complicit in its war crimes against Palestinians."
Evident too have been the media's double standards in dealing with Israelis and Palestinians. Last week two Israeli missiles exploded on a Gaza beach, killing four Palestinian children. (That was a tragedy, whichever way you look at it.) It was cringe-making watching the ITV correspondent putting the Israel Defence Forces spokesman through the third degree.
The IDF spokesman kept his cool. "The matter is being investigated. I can't say yet what is the cause. The Israeli military does not target civilians," he said.
Hamas rockets have been targeting civilians - men, women and children - for months. About that, nary a word.