Amelia Bones, a senior official from the Ministry of Magic, responsible for the law enforcement department in the wizarding world, and Emmeline Vance, a seasoned obscurantist with vast experience and a lot of merit ... How did it happen that these two deaths happened almost simultaneously? We'll figure out.
Amelia Bones
Amelia Susan Bones (Shan Thomas plays in the film) until the time of her assassination in the summer of 1996, she held the position of head of the department of magical law and order and was also a member of the Wizengamot. The woman was very skilled in martial magic, reputed to be an excellent duelist, and therefore for Voldemort he presented a doubly “interesting” goal.
First, by removing her from her post, the Dark Lord and his henchmen hatched plans to advance his protege to her place, which subsequently became Pius Tolstovaty, who fell under the Imperius spell.
Secondly, he just needed to prove to the Death Eaters that during his “absence” he had not lost his skills and was still as powerful a wizard as during the first magical war. And to defeat alone such a “difficult target” as Amelia Bones means, to 100% confirm their “excellent shape”.
But knowing that everything is not so okay around how Cornelius Fudge convinces everyone , the Order of the Phoenix decides to put one of its own bastards, just in case, Emmeline Vance, who is also a sorceress who has been experienced and skilled in dueling. Otherwise, there is no way to explain these two deaths that occurred almost at the same time.
Emmeline Vance
This sorceress Harry Potter was first introduced at the time when he was escorted from the house on Tisova to the headquarters of the Order of the Phoenix. The character of Emmeline Vance in the movie "Harry Potter and the Order of the Phoenix" was played by Bridgett Millar, and since before the events described in the next book, "The Half-Blood Prince", her heroine was killed, she appeared only in this series.
Another time, Emmeline Vance, Harry Potter saw on a photo card with members of the original composition of the Order of the Phoenix, which showed him the Terrible Eye of Moody at headquarters. If we take into account that it was originally in the Order (and it was created back in 1970), then at the time of the action unfolding in the fifth book (1995-1996) it was at least forty years old, no matter how different competent sources. Dumbledlor would never have allowed then to join his group a minor, let alone a girl, had she even been a super-martial. And the fact that she really was in the Order from the first days of its existence is confirmed by the words of the Terrible Eye of Moody.
... From the inside pocket of the mantle, Moody took out an old, badly battered magical photograph.
“The Order of the Phoenix as it was at the very beginning,” growled Moody. - Stumbled last night when I was looking for another invisibility cloak ...
The words “at the very beginning” speak for themselves.
How events most likely developed
In light of this, it turns out that the fact that the two former strongest obscurants with great experience could just die in one day is not a coincidence. Former Emmeline Vance, most likely, was assigned to guard Amelia Bones. Apparently, by hook or by crook, the Death Eaters still managed to distract Emmeline from Amelia, after which the crowd quickly dealt with her or, having attacked stealthily, at a time when she did not suspect this.
And when Voldemort was informed that the “bodyguard” was over, he calmly went to Amelia Bones to complete his dirty deed.
But judging by the defeat inflicted on the scene, Amelia simply did not give it up. The battle was long and destructive, but the advantage was still on the side of the Dark Lord.
The Muggle police arrived at the scene for a long time puzzled over who and how could get into the locked room and kill an innocent elderly woman who had a quiet life before, never quarreled with anyone and was, according to neighbors, quiet and almost imperceptible.
Effects
The consequences, as mentioned, were deplorable. Amelia Bones was replaced by Pius Tolstovaty, “crushed” by the “Imperius” spell, by means of which the department for ensuring the rule of law began to work no longer for the Ministry itself, but for the Dark Lord and his henchmen. And later it (the Ministry) was completely captured by Voldemort.