Organizations warn the ordinance is divisive, harmful, and unconstitutional, and say it would incite hostility toward Jewish residents, harm local businesses, and expose taxpayers to higher costs and litigation   Somerville, MA – Today, ADL (the Anti-Defamation League) and The Louis D. Brandeis Center for Human Rights Under Law urged Somerville city officials, including Mayor Jake Wilson, to reject a proposed ordinance that would require the city to boycott and divest from…