between the 8th and 27th of August 2014, 2,100 Palestinians were killed by Israeli soldiers, under the direct instruction of Netanyahu. The UN's official investigation found that 1,462 were civilians. Stateless civilians, denied territories and rights, killed by the soldiers of a state that starves them when it isn't shooting them, under the direct order of a US allied government.
Meanwhile, in 2002, over the course of a month, 790 Muslim Indians were killed during riots by Hindu civilians, with the state government arguably unable but potentially unwilling to do anything, with Modi linked indirectly and with the evidence unclear.
I think Modi probably was responsible. But even if you add that in, I know which of these probably hangs lower on the moral balances, and it's Israel, and support for Israel.
So if your baseline standard for a Democratic nominee is: doesn't support the murder of Muslims in allied territories, well, there's actually very few potential Democratic nominees you can support. Durbin 2020, perhaps? If you are willing to admit some, simply for lack of candidates and having to pick the best of a bad bunch, Gabbard just isn't that near to the bottom of the pack