Sir David Amess killing: Security for politicians is a global dilemma

The threat of gun violence, and the pandemic, has changed the way many politicians meet constituents in the United States. Both Republicans and Democrats have been targeted in violent attacks. Republican Steve Scalise of Louisiana, was shot and wounded by a leftwing activist during baseball practice for a congressional team in 2017, and a Democrat, Gabrielle Giffords of Arizona, was gravely wounded by a gunman in 2011 at a political event outside a supermarket.