I really think that any theme park would be a target for the sheer numbers within its confines. However, I think Disney parks are more like an iceberg security wise - meaning that a large percentage of the security is not seen by the public but very much there. I don't think I'd want to see it either, the uniforms kind of say 'something's up' to me and would add to fear factor. When we were visiting the Paris parks in January, they had metal detectors ( like at the airport) and bags went through an Xray machine... it was quick and efficient, and dare I say it, but probably quicker and more effective that the physical bag check. Not sure if it was a new thing or something they've always had, but I think in light of recent events, that would be good to adopt in the other parks as well without increasing peoples overall fear level.
1999- Tokyo DL, 2008- DLR/Cal Adventure, 2012-DLR/Cal Adventure, 2013-Tokyo DLand/Sea, 2014-DLR/Cal Adventure, 2015- Paris DL, 2016 - WDW/Disneycruise , upcoming - May 2018 - HongKong DL