We are motivated in the above by our own desires for personal and social liberation and authenticity. Others are outsiders alienated and excluded from what they see as a 'sick society' and seek to belong to something better. I think people are drawn to anarchism by a sense of belonging to an alternative 'community' of like minded people, excitement and the feeling of social empowerment, that we are not helpless victims of the system, and can make a difference. Well not all of those at J18 were anarchists, including many of the 'rioters'. But I take your point.
Many anarchists are pacifistic, reformers.
Most probably lie between these two poles. We are also political realists and are aware that kind words alone rarely effect vested interests, no matter how unjust those interests may be percieved to be. At the time 'anarchist' and 'nihilist' were still used as pejorative general terms for such activists. Of course the greatest 'terrorism' was performed by the governments of the period. Ideology' that is not lived is nothing but hypocracy and ungrounded, intellectual masterbation.