They mostly engage in confronting the police during demonstrations and riots, especially in countries such as Canada, Greece, and Mexico.
ðeɪ mˈoʊstli ɛŋɡˈeɪdʒ ɪn kənfɹˈʌntɪŋ ðə pəlˈiːs dˈʊɹɹɪŋ dˌɛmənstɹˈeɪʃənz ænd ɹˈaɪəts, ɪspˈɛʃəli ɪn kˈʌntɹiz sˈʌtʃ ɐz kˈænədə, ɡɹˈiːs, ænd mˈɛksɪkˌoʊ.