The phrase "act in support of" is correct and usable in written English.
It can be used when expressing the intention to assist or advocate for a particular cause, action, or individual.
Example: "The organization aims to act in support of local communities affected by the recent disaster."
Alternatives: "assist in favor of" or "advocate for".
Already they've formed another cyber quarrel with infamous hacking group Anonymous, which has declared to act in support of the Syrian rebels.
The envoy has scorned the idea that leftwing anarchists should elect to act in support of a fascist coup in which blood had been shed and crimes enacted.
She replied, "We are hopeful that we will see Congress act in support of the effort we are undertaking," leading him to remark, "That was super diplomacy.
That is its highest and best purpose, and it should continue to invite leaders of both parties who express and actually act in support of Israel.
Italians can expect Mr. Monti to act in support of market integration, which he believes will make Italy — and the European Union — more resilient to crises.
We act in support of the MIT and open-source cryptocurrency communities, and yet are open to collaborating with all sectors of society.
But in those cases there were specific acts that the officials took in support of the person who had lavished gifts on them.
The similarities are striking and undeniable — down to religious justification for carrying out horrific acts in support of the economy.
Both these ragged armies have acted in support of holders, or would-be holders, of state power.
It is amazing that our selfless acts in support of Muslims in many different geographic areas are barely mentioned by Bush administration officials.
Indeed, at least 80% of global millennials have acted in support of a brand they trust and more than half would volunteer to test new products from these trusted brands.
