I’m wondering what is to be done about all this.
Good question indeed.
The strategy of manipulation of the Spanish people carried out from the very begining by the individuals involved in the coup had been three days of terror followed by rapid oblivion.
Therefore, the first objective of these news is to avoid the latter, to keep the 3/11 case opened in the Spaniards' minds. Very probably for that reason they are published periodically.
Moreover, a constant pounding on the Official positions yields a better result in breaking the condition of
supension of disbelief that allowed the Official Conspiracy Version to be spread.
All 3/11 is an issue of Social Engineering by Modulated Exposure to Terror (in other words, social manipulation through terror). These news interfer such process because the system could not be reset (oblivion) as the plotters of 3/11 wish.
I suppose the essential thing is to try to inform the Spanish voters. But I suspect that the problem is that people tend to be either Catholic or Socialist and not much can change their minds.
I think that the Spaniards that really believe 3/11 was carried out by Al Qaeda or Islamic militants don't surpass 33%. You are right, many Socialist voters don't mind how their party wins the elections, as long as they win, sometimes because they are unfit for any other occupation but politics, they expect a government subvention or simply they see post-Franco democracy as some kind continuation of the Spanish Civil War.
Among the right wing voters, probably the main argument for oblivion had been the real estate bubble, which yielded a price increase of 17% annually when 3/11 happened. They did not want any political disturbance as long as they could earn so much with so relatively small effort.
Above all, Spaniards have no democratic tradition, we come from a dictatorship, and people tend to not face the government, especially if they have proved they are brutal, at least as long as the economy goes well.
These articles are directed to the people indeed, to avoid forgetting 3/11 and to teach them that such atrocity cannot left without punishment. But I think they are also directed to the plotters of 3/11, it is a way of saying that we don't believe their pathetic version, no matter how many news channels wordwide had broadcasted it; it is a way of saying that their social engineers and terror administrators have failed and that the suspension of disbelief is over, and it is a way of saying that what we don't know about 3/11, we already can figure out.