Is all action individual or collective that has impact in the other citizens of a community. Greek praksis realization prakseos, action, activity, business, advocacy, behavior. The expression is typical of reivindicadoras and transformative ideologies of society in search of more fair and equal, situations arising from the 19TH century, which has traditionally peaked the political left, because conscious right and the unconscious and deluded or is well positioned or unknown that isn't it and therefore wants to maintain the existing social order.