she called her husband, from jail, and asked him to move them so they couldn't be used in court against her. she said "do whatever you have to do". the cops listened to the phone call, watched him load them into the car and arrested him on the drive. i think it's pretty straightforward that she was asking for his help in obstructing the investigation by hiding potential evidence against her.
Lawful investigation and prosecution would of course not hinge upon the contents of political publications. As such, any obstruction was purely aimed at the inevitable two minute hate by the addled autocrat about how antifa is hiding everywhere, making his coffee too cold and his food not taste as good as it used to.
I am asking those questions in good faith, to explore the new limits on free speech, and don't see any direct answers. What happens to this guy specifically is only interesting as far as it affects everyone else in the US.