Thursday on the NewsHour, mass shootings kill at least 18 people and a massive manhunt rattles rural Maine. Israeli forces conduct a raid into Gaza in preparation for a ground invasion as the U.N. strains to shelter more than 600,000 displaced Palestinians. Plus, childcare remains a significant barrier to millions of people needing to appear in court over low-level offenses. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders