'gesture of unity' is correct and usable in written English.
You could use it to refer to an action that shows that two or more parties are in unity. For example: "The mayor made a gesture of unity when she invited representatives from both sides of the debate to join her in signing the document."
Their choreographed performance would originate on both sides of the border and stage a symbolic gesture of unity and peace.
Instead, Mr. McAuliffe said, he went to the Red Cross to give blood in a gesture of unity.
This latest gesture of unity, the most dramatic in a decade, could add to fears in Washington that Pyongyang is making progress on a more far-reaching agenda.
Still, the vote was a bold reprimand of France's ruling class from all ideological directions, a gesture of unity in anger.
WASHINGTON — A leader of the Senate Democrats and one of the Senate's most conservative Republicans will sit together at the State of the Union speech next week in a gesture of unity.
We set out across the short stretch of no man's land towards Libya beneath a giant image of Muammar Gaddafi, his chin lifted, hands held together in a gesture of unity and victory.
Since the confirmation fight, other justices have made similar defenses of the court, or made symbolic gestures of unity.
In gestures of unity with the nation's most wounded city, prominent Democrats and Republicans are now mulling over holding their 2004 presidential conventions at Madison Square Garden.
After a failed coup in July, the president said he would drop the outstanding suits in a one-off gesture of national unity.
At lunchtime, a group from the largely Sunni city of Samarra joined the mostly Shiite crowd in an unusual gesture of sectarian unity.
To top it off, he was later released by President Kim Young-sam, in a gesture of national unity, and now lives under constant protection in the leafy Yeonhee-dong district of Seoul.General Chun is apparently not without his defenders, even today.
