Countless people have marched through Madrid to need greater action to be taken against climate change.
It comes because the COP25 climate change convention continues from the Spanish capital on Friday.
Greta Thunberg also joined the demonstration as it got underway after she spoke on a panel earlier in the afternoon.
The Swedish teenager said that she believed that the voices of climate activists were”becoming bigger and bigger” and were “discovered increasingly” but it didn’t yet”interpret political activity”.
She added: “I genuinely hope that COP25 will cause something concrete,” before saying she thought climate and social justice ought to go together.