The homelessness issue in San Francisco has gotten so bad that in one neighborhood, residents put boulders on the sidewalk to prevent people from setting up camp.  What happened next was a battle between activists and residents that resulted in them being removed after it became too much of a problem for the residents who put them there in the first place.  Hannah Knowles, reporter at the Washington Post, joins us for how it all played out.

Next, foul balls are hurting hundreds of people at Major League Baseball parks, leading to a discussion of whether more netting should be placed to protect people from errant baseballs.  The Phillies are the latest team to say that they will expand safety netting before next season starts.  NBC News found at least 808 reports of industries to fans from baseballs.  No park shared data for the investigation but 701 of those injuries came from just 4 parks, so the true number of injuries could be much higher.  Vicky Nguyen, investigative and consumer correspondent at NBC News, joins us for more on foul ball injuries.