The social network granted more than 55,000 content restrictions following government requests, largely related to a photo from inside the Bataclan music venue.
Militant cell changed its target to Brussels as police investigation into Paris attacks unfolded.
All of the main suspects in the Brussels and Paris attacks appear to have been taken off Europe's streets.
Bilal El Makhoukhi was released from custody just last month after 2015 conviction.
It appears to be increasingly common that terrorist attacks not of the lone-wolf variety involve members of the same family.
Alexey Pushkov said Europe has hushed up links to opposition militants.
"It's war," the cartoonist declares with the hashtag #Bruxelles.
Unemployment and alienation have left many bitter and ripe for recruitment, experts say.
The old-line extremist networks have no connection to today's "jihadist cool" aficionados.
Ukraine's security chief angered Moscow with suggestions of Russian responsibility.
Social media users share sympathy and express defiance after attacks.
Mufid Elfgeeh, 32, of Rochester was sentenced to 22 years in prison for attempting to recruit fighters for ISIS.
The Pew Research poll was conducted before the recent wave of violent stabbing and shooting attacks.
Salah Abdeslam is suspected of helping to equip the Paris gunmen and suicide bombers.