Kamala Harris’ presidential campaign has unleashed a new advert targeting Arab-American voters with clips of the vice-president saying she “will not be silent about human suffering in Gaza”. The advert is running on social media site Snapchat and Google and is reportedly targeting Arab-American voters in Michigan, and follows Republican campaign groups’ efforts to highlight Harris’ support for Israel in the same area. The 15-second clip runs with the tag “paid for by Harris for president” and is formed of archive footage of Harris speaking about the plight of Palestinians in Gaza. It is titled…