A Star of David references Judaism as a whole. It paints an entire religion as the perpetrators of bad acts that can only reasonably be laid at the feet of Netanyahu’s Israeli government. An Israeli flag might be more appropriate, but it would still be painting ordinary Israeli citizens with too broad of a brush.
Just for the record, the Israeli citizens you’re giving a free pass to, voted for this government. More or less.
They aren’t totally holding the bags, they do have some blame to carry. Same way as an American I have some blame for Bush’s war in Iraq or Obama’s war in Afghanistan.