brussels belgium anti-muslim separatist vlaams belang flemish interest party congratulate future u.s. president donald trump wednesday say unexpected election victory could repeat europe u.s election show far politicians people say party chairman tom van grieken tweet reference trump victory britain vote leave european union march trump isolate phenomenon europe voters want real change say separate tweet vlaams belang opposition level government belgium though rise 12 percent support dutch-speaking flanders region northern belgium trump victory isolate phenomenon belgian far right