Iran retaliated to a United States drone strike ordered by Trump that killed Al Quds commander Qassem Soleimani, by firing a volley of ballistic missiles at two military bases in Iraq that housed American troops. That missile attack came in retaliation for the death of Iranian Gen. Qasem Soleimani, who was killed by an American drone strike near Baghdad on January 3.
A candlelight ceremony late Saturday in Tehran turned into a protest, with hundreds of people chanting against the country's leaders - including Supreme Leader Ayatollah Ali Khamenei - and police dispersing them with tear gas.
Video posted Sunday showed students at Tehran's Shahid Behesthti University walking around an American and an Israeli flag that had been painted on the floor suggesting that their beef was not with those nations but with Iranian leadership.
Initially, the Iranian regime had denied any wrongdoing in the plane's suspicious crash, but Tehran has since admitted that it its military mistakenly shot down the plane with an antiaircraft missile. The government shut down internet access for days, making it hard to gauge the scale of the protests and the subsequent crackdown.
These were the details of the news Iran plane crash: Protesters slam "lies" on downed jet for this day.
Reports of the protests were carried by state-affiliated news agencies, while video clips circulated on social media. "But when the events related to the plane took place, I saw that opinions changed".
Other US officials also wasted little time before they joined the cheering chorus of the Iranian protesters' supporters. Late past year, Reuters reported 1,500 Iranians were killed in less than two weeks, following the eruption of protests after a surprise spike in oil prices. As a Basij officer walked over the painted area, the crowd began to shout and called him "dishonorable" - an affront in Iranian culture.
"We closely monitor their protests and their courage inspires us", he said.
Foreign Secretary Dominic Raab said the arrest was a "flagrant violation of worldwide law" and repeated calls for Iran to de-escalate tensions. He added in a tweet that he had left after five minutes when chanting broke out.
For days, Iranian officials had vigorously denied it was to blame, even as Canada, which had 57 citizens on the flight, and the United States said their intelligence indicated an Iranian missile was to blame, albeit probably fired in error. "It can continue its march towards pariah status with all the political and economic isolation that it entails, or take measures to reduce tensions and take a diplomatic path forward".
Iran's deputy foreign minister Abbas Araghchi later tweeted that Mr Macaire was arrested "as an unknown foreigner in an illegal gathering". He said that the families of the victims are hurt, angry and grieving.
However, Washington apparently decided that this tragedy, which took the lives of 176 people, is a good enough reason to remind Iranians - who are already consumed by grief - just how much they are "suffering" at the hands of a supposedly "oppressive" regime that, by sheer coincidence, turns out to be America's arch-rival in the region.