Paris heightens security for Olympics, and other top headlines

Here are some of Thursday's top headlines, including several arrests by French police ahead of the opening of the Olympic Games, California Gov. Gavin Newsom's executive order instructing local officials to clear thousands of homeless encampments statewide, and the announcement by Southwest Airlines that it is ending its open seating policy. Dana Jacobson, Elise Preston and Kris Van Cleave report.

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