Assassination of Thorton Echevarria

Thorton Echevarria, the 89th President of the United States and Emperor of the United States, was assassinated by then Vice President, Barnabas Blanckenship on March 15, 2215, while being held captive by a insurgent group known as the "Commawatch".
Occurring during the 3rd American Civil War, a group of Imperialist Party members, notably, Former Prime Minister and Vice President Barnabas Blanckenship, Donte Alighieri II, Bullrun Jackson, Kako Sumise and Hennorson Babaship and several others had become horrified at the collapse of the United States and had become disillusioned with Imperialist Party rule. By January of 2215 the United States had been so badly beaten and broken that it held just a few states compared to the dozens it used to hold. They had also become horrified by the increasing atrocities the Imperialist Party were committing under the rule of President Echevarria.
By late February the co-conspirators had resolved to bring the Imperialist Party government shattering apart. They had intended to raise an army in secret and kidnap President Echevarria and Prime Minister Hartmont to force a surrender of the Party. Vice President Blankenship had been chosen to aid personally in the kidnapping of President Echevarria as he held the trust of the party and especially the trust of the President.
Imperial General Bullrun Jackson was places in charge of swaying the Imperial Guard to join the conspiracy in secret. He had been widely successful as he was widely admired by those who served under his command. President Echevarria was scheduled for an emergency party meeting on March 15 in Philadelphia to discuss the war situation. On March 14, General Jackson ordered the change of the Imperial Guard to place co-conspirators next to the President. He claimed that this was needed as these guards were more experienced and loyal, and that with the increased security threats to the President his protection needed to be increased.
Prime Minister Hartmont was also to be in attendance to the meeting and on March 15, 2215, President Echevarria, accompanied by Vice President Blanckenship, Prime Minister Hartmont, General Jackson and 7 Imperial Guards, 5 of whom were co-conspirators. Once the meeting had begun at 10:05 AM, President Echevarria stood firm in his revolve never to surrender and continue the war to the last man, this is when General Jackson, according to his auto-biography had decided that Echevarria had to die, a sentiment he would later share.
After the meeting had ended at 12:36 PM, President and Prime Minister were leaving and out in the open when General Jackson gave the codeword "The Republic Lives." at that moment Imperial Guards turned against the Presidents loyal protection and opened fired, Echevarria was grabbed and taken away in the Presidential Limousine, escorted by a motorcade. They escaped to an unknown location as other agents around the United States began to raid Imperial barracks, overwhelming Imperialist forces. 
President Echevarria and Prime Minister Hartmont were held in captivity for several hours after Vice President Blanckenship openly demanded the Imperials surrender. Imperial Vice Chair, Joshua De LaRosa who was not commanding Imperial forces refused to surrender, even when Commawatch threatened to execute both Echevarria and Hartmont. After Commawatch realized their plan to force a surrender had failed it became clear that Imperialist Forces were closing in on their location, not wanting Echevarria to be set free it was resolved he would be put to death for his crimes against Humanity and the United States of America.
The Commawatch came to the decision to execute the President at 6:03 PM, at 6:22 PM he would be removed from his cell.
At 6:48 President Echevarria would be stood against a wall and a hood would be placed over his head.
At 6:51 Vice President Blankenship himself would shoot the President once in the head, and twice in the back. At 6:52 Thorton Echevarria was dead.
At 6:55 Vice President Blankenship would be sworn in as President of the United States of America. 
It would be decided thereafter that Prime Minister Hartmont would not himself be executed and would be still held poisoner.