Playing God.

or, Taking the Law Into Their Own Hands.

U.S. Secretary of State John F. Kerry issued a statement condemning “in the strongest possible terms the despicable and senseless abduction and murder” of the Palestinian teen.

“At this tense and dangerous moment, all parties must do everything in their power to protect the innocent and act with reasonableness and restraint, not recrimination and retribution," he said.
...
On Wednesday, the Israeli military said that nine rockets had been fired Wednesday at Israel from the Hamas-controlled Gaza Strip and that all landed in unpopulated areas. Israel responded in the late afternoon with airstrikes on what the military said were the launching sites of four of the rockets.

At the same time, protesters in Jerusalem gathered at the western entrance of the city to protest what they said had been an inadequate government response to the killing of the Israeli teens.

“The people demand collective punishment," they chanted.