I don't get how this can possibly be about left vs right. Common sense hopefully doesn't depend on which side of the political spectrum you fall into.
Which of the 3 points have been dis-proven?
Also take into concideration that -
1. The kid had a metal box containing PCBs and probably large components, all tide together around with a wire, and it was making beeping noises in class.
2. The school body and school district is almost 90% non-white, with the majority being "brown".
re. 2: He's asking the father to provide an image of something that was confiscated by the police or school administration. Furthermore, the first video with the boy contained a fairly detailed description of the clock, and the second video even contains an image of the box (or at least a similar box).
re. 3: Well, he provided an alternative explanation for that himself.
Hacker News has been a left-wing echo chamber ever since the crazies started flowing in during that period when every story on the front page was NSA related.
Now it's nearly impossible to have a reasoned discussion on any non-technical issue without SJWs using the voting system here to silence dissent.