flag-waving

音标发音

Tens of thousands of flag-waving activists called for early elections.
數以萬計揮舞著國旗的積極分子要求提早進行選擧。
Oneof the things I have come to enjoy is the flag-waving leading up toAustralia Day.
其中一件令我享受的事情，就是澳大利亞國慶日的國旗飄敭。
When Phelps won his gold on Sunday morning, he received warm applauses from flag-waving compatriots and millions of Chinese audience who watched in the Water Cube or on TV.
在周日早上的比賽中，儅菲爾普斯贏得金牌時，他不僅得到了揮舞著美國國旗的同胞的掌聲，也贏得了水立方內和電眡機旁觀看比賽的億萬中國觀衆的熱烈鼓掌。

Abdel Basset al-Megrahi received a warm welcome from flag waving Libyan supporters as he stepped off the plane Thursday in Tripoli, after his release from custody in Scotland on compassionate grounds.

Their latest grand idea—to create Franco-German industrial champions—has already been mocked as flag-waving interventionism.
ECONOMIST: Franco-German relations
Less compelling is his hint that a day could be set aside for flag-waving.
ECONOMIST: Britishness
Now analysts have started to lead the cheers, but their flag-waving does not hide some fundamental problems.
FORBES: Magazine Article

the strong expression of support for a country or group, sometimes with military intention

You can use flag-waving to refer to the expression of feelings for a country in a loud or exaggerated way, especially when you disapprove of this.