Looking back : The 80s.
What we call now "terrorist attacks" were then carried our by environmentalists. The most famous one of them was called "UNA Bomber".
And also there were IRA bombings. Irish Republican Army. They used to plant time bombs in busy markets in London, and then call the police to inform them "A bomb is about to go off in that market in 5 minutes." And then watch the rush and terror in fun sitting aside.
Time flies.