Original sentence: Protest strategy includes getting passers-by involved, baffling police who often don't really know what to think, or don't realise exactly what's happening.Protests tend not to be violent and there is usually a good sense of fun involved with Hijacker projects.The Space Hijackers exist mainly to attempt to change the public's perception of spaces they regularly use, mainly by staging unexpected events.They believe that increasing politicisation usually leads to increased subordination and discrimination and other forms of domination and control and so Space Hijackers claim to seek to break down and deconstruct society's notions of space
Edited sentence: The Space Hijackers exist mainly to change the public's perception of spaces they regularly use, mainly by staging unexpected events.Their work is important because with increasing politicisation usually comes increased subordination and discrimination and other forms of domination and control, space hijackers seek to break down and deconstruct society's notions of space.There is usually a good sense of fun involved with Hijacker projects, as this not only gets passers-by involved, but also helps to ward off the police, who often don't really know what to think, or don't realise exactly what's happening