An AFP correspondent in Awkar outside the capital Beirut said several hundred pro-Palestinian demonstrators had gathered near the USA embassy, located in the area.
Following the worldwide ministerial meeting in Paris, Lebanon's Prime Minister stated that US President Donald Trump's decision to recognize Jerusalem as Israel's capital will complicate the process of returning Palestinian refugees to their homes.
The U.S. Embassy in Beirut issued a security message reminding U.S. citizens of "the need for caution and awareness of personal security".
They were blocked from reaching the complex by a metal gate sealing the road leading to the embassy, and security forces fired tear gas and water cannons to repel demonstrators who tried to open the gate by force.
Some protesters also torched an effigy of Trump. "Demonstrations have the potential to become violent".
Protesters gathered about 1 km away from the embassy, throwing rocks and burned tires at the building.
"We came to say to the US Embassy that it is an embassy of aggression and that Jerusalem is Arab and will stay Arab", said Ahmad Mustafa, an official in the leftist Democratic Front for the Liberation of Palestine, who was among the demonstrators.
"We have taken a political decision not meant to reflect [what is going on in] the streets".
"It isn't just a city, it's the struggle in which we grew up to build the Palestinian cause", she said. "It is impossible to implement this decision as long as there are people like us", said a Palestinian protester.
Palestinian and Lebanese groups staged demonstrations after Friday prayers throughout Lebanon and inside Palestinian refugee camps.
President Trump's move to recognize Jerusalem as Israel's capital last week.
Demonstrators yelled revolutionary chants and songs blasted the barricades for around an hour in a relatively peaceful manner until group leaders called for everyone to return to buses chartered to transport protesters, mainly from the south.
Lebanon is home to nearly half a million Palestinian refugees. The government of Lebanon, which hosts about 450,000 Palestinian refugees, has condemned Trump's decision.
Israel occupied southern Lebanon for 22 years before withdrawing in 2000, but the two countries remain technically at war.