Furthermore, this wasn't ANFO, just ammonium nitrate. So, no fuel--only oxidizer. Some analysis has suggested that the efficiency of a detonation here would only be .15. Furthermore, probably a low-order detonation (only part of the material detonating). Even actual ANFO typically needs an intermediate booster explosive to achieve a good high-order detonation. For example, instead of just having a detonator on its own a blaster might add a PETN booster charge to make sure the ANFO all detonates. Without that you typically see pellets of undetonated ANFO scattering around the explosion. Hell, even with a booster you still tend to see ANFO pellets lying around the blast area.
All that is to say, this was probably closer to 200 tons of TNT, very roughly speaking.
In the first one, the police department simply blurred out the face (and maybe some gore) in the video that they released? While I disagree with this, I don't think it's some nefarious plot lot you're suggesting. They seemed surprisingly patient with the armed party (by US standards) and only shot him when he charged them with a knife...
As for the second link, that's definitely a travesty of justice. That said, the case unfolded over literally decades. I don't see how encrypting comms would change that sad situation.
All that is to say, this was probably closer to 200 tons of TNT, very roughly speaking.