Plastic explosives in ones shoe is hardly a comparative analysis.
Ah, but they're not going to write 1,432 laws to cover every nuance. It will cover "things that could blow up" not shoes, laptops, etc. Sure, specific things might be targeted, but there will always be the "catch all" language that covers the "including, but not necessarily limited to" list.
I'm certainly not in favor of searches for any reason or no reason at all, and taking your laptop for no good reason is outrageous!
"probable cause" is the key, c4 in your laptop is detectable. If you have a history of bad associations, that's "probable cause" if your coming from an area in the north of Afghanistan, that's "probable cause" if your wearing a T'shirt that say I want to blow something up, that's "probable cause" but to snatch someones "stuff" without accountability is abuse of power.
Under this ruling everyone is assumed guilty and responsible for proving their innocence.
If your a reporter in theater in Iraq and someone doesn't want your story covered, they can snatch your stuff and hold onto it without justification or accountability, all in the name of HomeLand inSecurity.
We can secure ourselves from everything but fear.
"If tyranny and oppression come to this land, it will be in the guise of fighting a foreign enemy." James Madison