Yes, the way public perception is managed is just disgusting. Same old "here's proof that everyone who doesn't agree with the mainstream is a Nazi."
I agree that it's too early for conspiracy theories, however there's one interesting bit: apparently, the killer contacted the authorities years ago, perhaps multiple times, and claimed he was subject to illegal surveillance. Whether there's something fishy here or he was just a paranoid crazy is hard to tell though. (See Hanau: Attentäter kontaktierte Behörden offenbar lange vor der Tat - WELT)
Here is a newsworthy item which "inexplicably" didn't make it into the mainstream media...
Beatrix von Storch on the Hanau failure of the federal prosecutor's office:
"The Attorney General must resign"
Source
Beatrix von Storch (née Beatrix Amelie Duchess of Oldenburg) explained to the press that the Attorney General's Office had apparently known since November of Rathjen's serious mental health problem. However, neither the gun license nor the weapon was revoked. She therefore demands the resignation of the Attorney General.
Beatrix von Storch who is a lawmaker for the (much loathed) AfD party in the Bundestag went on to say:
The head of the Federal Criminal Police Office today spoke of a severe psychotic illness of the assassin. But the Federal Public Prosecutor General had not taken any action, although it had been known for a long time. It would have been necessary to revoke the gun license and the weapon from this severely psychologically ill person. But nothing of the sort had happened.
According to von Storch, this was once again a serious failure of the security authorities. One should finally stop exploiting this terrible day for party political purposes. Rather, one should talk about the resignation of the Attorney General.
And she added in response to the journalists' question: The assassin's writings clearly show that the assassin was a seriously mentally disturbed person.
Like it or not, the AfD party is probably the only genuine opposition party left standing in Germany.
With the political ambiance in Germany nearing that of 1932 (denial of free speech, Antifa encroachments against dissenters, character assassinations, thinly veiled threats against people pursueing their careers or conducting their businesses) the AfD is the canary in the coalmine. As long as they can be seen sitting in parliaments and sometimes raising their voices the seizure of power by the new totalitarianism is not complete yet.