I currently invest in index funds (VFINX and FUSEX) but would like to negatively screen out certain categories of investments for the purposes of "Socially responsible investing". I don't have any need to positively select socially responsible industries like environmental, equality, labor businesses, but I sure would like to avoid funding defense contractors.
Are there investment instruments which have the beneficial attributes of index funds like low fees, but exclude certain categories of businesses?
I'm not looking to exclude all "sin stocks" (e.g. alcohol, animal testing, gambling) so the blanket SRI investment instruments like VFTSX aren't really what I'm looking for