For one of the last abortion doctors in Missouri, harassment, stalking and death threats are a part of regular life. But this year, it's been worse than ever. Colleen McNicholas, the chief medical officer at Planned Parenthood of the St. Louis Region and Southwest Missouri, is one of many providers who told CBS News they've seen an uptick in violence this year, both against themselves and their clinics. They say the increased harassment has coincided with newly enacted state laws restricting legal abortion and polarizing rhetoric surrounding the procedure. The National Abortion Federation has been tracking violence against abortion providers...