obstructionists

例句:

• Democrats and many commentators, meanwhile, say Republicans are being obstructionists.
  来自CNN
• It'soon becomes absolutely essential. Those who doubt the necessity are dismissed as obstructionists and reactionaries.
  它很快就变得绝对必要,那些怀疑其必要性的人被当成阻挠者或反动派消灭.
  
• Critics of the tea party lay the blame on them as the do-nothing obstructionists.
  来自CNN
• White House officials are painting the Senate as a place dominated by obstructionists thwarting the will of the majority.
  来自WSJ