I doubted that she cared, but she does. This is on the same level as Roger Waters of Pink Floyd leading the musicians' boycott. It's so encouraging to see insiders speaking out this way. It is nothing short of heroic to put their celebrity on the line for such an ethical cause.
And even more specific, she detests Netanyahu:
https://www.newsmax.com/newsfront/natalie-portman-israel-genesis-prize-benjamin-netanyahu/2018/04/21/id/855830/