The modernist movement in literature was a 'reaction against' traditional literary conventions.
The announcement produced an angry/stunned 'reaction' from most of the people at the meeting.
There has been a 'mixed reaction' [=people have reacted in different ways] to the new policy.
(..) Plutonium. Wait a minute. Are you telling me that this sucker is nuclear? Keep rolling there. No, this sucker's electrical... ...but I need a nuclear reaction to generate the . gigawatts of electricity I need. You don't just walk into a store and buy plutonium. Of course. From a group of Libyans. (..)1985 Back to the Future