According to the Jewelers' Security Alliance (JSA) in 2014 smash and grab robberies rose by 77% over 2013. Watch this video of a smash and grab robbery from ABC News -http://abcnews.go.com/WNT/video/smash-grab-robberies-rise-us-31353073
On the JSA website, http://www.jewelerssecurityalliance.org, you can find crime prevention advice including these recommendation to help reduce the smash and grab epidemic:
Smash and grab robbery recommendations
In 2014 a total of 110 smash and grab robberies of jewelry stores in theU.S. were reported to JSA, compared to 62 in 2013, a 77% increase. Jewelerscan’t rely only on the great work by law enforcement to help with this crimeproblem. Below are some recommendations provided to jewelers by JSA to helpreduce the smash and grab epidemic.