Complex sentence: Robinson said that street protests were "no longer effective" and "acknowledged the dangers of far-right extremism", but he also said that he intended to continue to combat radical Islamism by forming a new party.
Split into simpler sentences: Robinson said that street protests were "no longer effective" and "acknowledged the dangers of far-right extremism". However, he also said that he intended to continue to combat radical Islamism by forming a new party.