As for Brussels's

I see this as really no different than mass shootings, or gun violence in general, here in the good 'ol USA.

It's simply the price of freedom. Bury and mourn your dead and carry on.

Giving more power to Feds while giving up our rights to privacy, or gun control, or whatever bullschit law politicians want to make out of thin air to give us the illusion of safety is well, just that, an illusion!
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"Government does not solve problems; it subsidizes them." Ronald Reagan

"The trouble with Socialism is that you eventually run out of other people's money." Margaret Thatcher.

"How fortunate for governments that the people they administer don't think." Adolf Hitler