I presume you think the Israelis should not shoot back if the Palestinians shooting at them happen to be teenagers? What would you do if a 16-year old shot at you? Ignore him?
In addition Sherman got General Grant to expel all Jews from his army. And Lincoln praised him.
I have never read that Grant's poorly worded order regarding Jewish merchants (not all Jews, since he had Jews who were soldiers) was at Sherman's instigation. Do you have proof of this? You also imply that Lincoln praised Grant (or possibly Sherman, your wording is a little vague) for issuing this order. In actual fact, Lincoln ordered Grant to reverse the order and publicly reproved him. He praised both generals because they won battles, not for any other reason.
He also was involved in the slaughter of Indians.
Amazing. When did participation in an Indian war become something to be tossed about by conservatives as iniquitous?
If so, you're going to have to denounce George Washington, Jeff Davis, Robert E. Lee and every other American soldier before the 20th century. Do you really want to do that?
Sherman was a railroad investor and he lobbied his brother, Senator John Sherman, to allocate federal funds for the transcontinental railroad.
Without such funds, the railroad would not have been built for several more decades. Was its construction a bad thing? Most of the funding was in the form of public lands which weren't worth much of anything until after the railroad was built.