In the West, a minority of reform groups are known to use drastic methods. For instance, American environmental activists lashed themselves to earth movers, using their own flesh and bones to obstruct the felling of a forest. Groups with different points of view, for instance pro-choice and pro-life advocates, right-to-bear-arms believers and gun-control activists, are as incompatible as water and fire.
在國外，少數改革團體手段激烈，例如美國環保人士曾將自己綁在推土機上，以肉身阻擋森林砍伐；立場不同的團體，例如擁墮胎與反墮胎運動者，擁槍枝開放與反槍枝開放者，更是勢如水火。