Jeremy Corbyn was among the speakers at a protest attended by thousands in central London to demand “freedom” for Palestinians.
A large crowd gathered in Hyde Park on Saturday afternoon for a rally in solidarity with the people of Palestine.
Protesters held banners, let off fireworks and chanted despite the heavy rain. A Palestinian flag was also placed at the top of a nearby crane.
Organisers from the Palestine Solidarity Campaign estimated that over 180,000 people attended the rally.
Mr Corbyn spoke at the end of the event, after speeches from former shadow chancellor John McDonnell and rapper Lowkey.
The former Labour leader said: “Children should not grow up having seen their home demolished by a bomb dropped from the safety of thousands of feet above.
They congregated at Victoria Embankment on Saturday afternoon before making their way to Hyde Park.
Holding banners, placards and flags, the demonstrators let off green and red-coloured smoke and chanted, blocking traffic as they marched.
Protesters let off coloured smoke (Yui Mok/PA)
The protests came after an 11-day military offensive between Israel and Palestine in the Gaza Strip.
Some demonstrators could be seen wearing costumes, masks and face paint, while others were draped in the Palestinian flag.
Groups of police watched as some protesters climbed bus stops and lampposts and wrote “Free Palestine” on walls.
Chants of “Israel is a terrorist state” and “We are all Palestinians” could be heard during the march.