I don't know what your families nationality is, but this is very common in some countries (not for memorial day, specifically, but picnicking in the cemetery on a holiday).
The way you use caution saying something in a public place that you don’t want everyone to hear is by keeping your voice down so that only certain people can hear it. Without privacy settings there is no equivalent to that.
The byline directly under the title says they could be the oldest painted sculpture found. Of course some shameless scumbag editor turns that into a title about “earliest art”.
Long USB cables can be problematic, and to avoid problems may need to be inconveniently thick and stiff. I’ve taken to using an AC extension chord for most of the length when I need to charge far from an outlet.