Smash anything but a windshield. I’ve needed to violently remove a windshield when replacing it (time was running out and tool shops were closed). Wearing protective glasses and pushing with both legs is what it took to somewhat loosen it, but not immediately remove it. Windshields are a multilayer structure of plastic and glass. Side windows are just glass.
As a happy user of Signal (no bugs or incidents from my viewpoint), I regardless chime in to say a word for decentralization. :)
Signal is centralized:
There exist protocols like Tox which go a step beyond Signal and offer more freedom -> have multiple clients from diverse makers (some of them unstable), don’t have centralized registration, and don’t rely on servers to distribute messages - only to distribute contact information.
In the grand comparison table of protocols (not clients), Tox is among the few lines that’s all green (Signal has one red square).