By the time social media companies took action against users and groups spurring on the siege of Capitol Hill this week, culminating in the suspension of US President Donald Trump鈥檚 accounts, it was too little too late.
For weeks, content on Big Tech platforms Facebook Inc., Twitter Inc. and Alphabet Inc.鈥檚 YouTube, as well as upstart fringe social networks, foretold the storming of the US Capitol on Wednesday that led to five deaths.
In one Facebook post identified by online advocacy group Avaaz, an illustration of Trump holding a machine gun in front of the White House is accompanied by the words 鈥淐ome and Take it.鈥� 
Another depicted Trump as Uncle Sam with text paraphrasing the president: 鈥淚 want you in Washington DC January 6. It鈥檚 going to be WILD.鈥�
After the violence, right-wing social users on smaller platforms were retelling the story with videos from the siege to bigger, new audiences, while the major sites showed users sharing false claims about the unrest and groups dedicated to 鈥淪top the Steal.鈥� 
The slogan refers to pro-Trump followers鈥� belief that the Nov. 3 election was fraudulent in favor of Democrat Joe Biden, a claim that has been encouraged by Trump without evidence.
Facebook said it 鈥渞emoved content and accounts that violated our policies against inciting violence and dangerous organizations in the lead-up to January 6,鈥� and was continuing to monitor and remove dangerous content.
A Twitter spokeswoman said the company had 鈥渢aken enforcement action on thousands of accounts that were attempting to undermine the public conversation and cause real-world harm.鈥�
On Friday, Twitter permanently suspended Trump鈥檚 account and suspended accounts belonging to vitriolic Trump fans including Ron Watkins, who helped run little-regulated image board 8kun, home of many recent posts calling for violence.
YouTube said it removes content that violates its community guidelines.

鈥楲ike Daesh does it鈥�

Disinformation experts said while big platforms allowed radical racists, violence enthusiasts and conspiracy theorists to amass a large audience, leading influencers learned what they could get away with.
鈥淵ou end up with a very diluted form of the content on the large platform, and the more radical stuff is elsewhere, like Daesh does it,鈥� said Alex Stamos, the former Facebook chief security officer who runs a Stanford program exposing disinformation.
The mainstream content 鈥渋s difficult to claim is inappropriate, because it says 鈥榗ome to a rally.鈥� Bring this and bring that, 鈥榞et ready to rumble,鈥� is on 8kun and Parler, and operational stuff is on Telegram.鈥�
Even after major purges of accounts and groups, it has been easy for the operators to re-emerge with slight tweaks, such as swapping 鈥渃ue鈥� for 鈥淨,鈥� said Daniel Jones, a former FBI analyst and Senate staffer who leads non-profit research firm Advance Democracy Inc.
On Wednesday, a tweet that turned one of the earliest posts by the anonymous 鈥淨鈥� three years ago into the call to action 鈥淢y fellow Americans, the Storm is upon us鈥� got 16,000 retweets.
Before Facebook took down its page late on Tuesday, Red-State Secession had urged its nearly 8,000 followers to find the home addresses of officials who 鈥渉elped steal the election.鈥�
It linked to a website that declared last week a 鈥渟econd American revolution鈥� would start on Jan. 6, and urged supporters to follow its accounts on more permissive social media platforms Gab and Parler 鈥渂efore we get deleted.鈥�
The group said by email that its Facebook page and blog 鈥減romote the peaceful separation of blue states and red states鈥� and that Facebook had overreacted.
Far-right groups that appeared at the riot maintain a vigorous online presence on digital platforms such as Parler, Gab, MeWe, Zello and Telegram, and in some cases discussed using overwhelming crowds to enter the Capitol, said Jared Holt, a disinformation researcher at the Atlantic Council.
MeWe said it prohibits 鈥渉aters, lawbreakers, violence inciters,鈥� and has been taking action on violations around the protest.
Gab CEO Andrew Torba said by email: 鈥淣one of the platforms you listed, Gab included, are useful for organization of any type.鈥�
Zello, Telegram and Parler did not reply to requests for comment.

Recruitment machine

The selfies snapped on the Senate floor and livestreams broadcast from inside lawmakers鈥� offices served as marketing to recruit new followers and in some cases earn money.
鈥淲hile extremists on the ground livestreamed and bragged about the chaos they created minute-to-minute, far-right online communities aggregated their content and cheered on their efforts,鈥� said Holt.
The Southern Poverty Law Center documented at least five accounts on blockchain-based video platform DLive that livestreamed Wednesday鈥檚 protest, including two accounts belonging to people who participated in the white supremacist-led 鈥淯nite the Right鈥� rally in Charlottesville, Virginia, in 2017.
One of them, a provocateur named Tim Gionet who is known online as Baked Alaska, livestreamed from inside a Capitol office. 
He pulled in at minimum $222 in tips from viewers via DLive during the afternoon, according to the report.
He promoted his content to followers on Instagram and Facebook until the company disabled his accounts on Wednesday.
DLive said on Thursday it had suspended three accounts, banned two others and permanently removed over 100 broadcasts. Donations and paid subscriptions will be refunded, it added.
Gionet did not respond to requests for comment.