The children were attending a church service when the lightning struck, police say.
Protesters shouted "murderer" at Felipe VI, who was also asked why nothing had been done to avoid the tragedy.
Spain's King Felipe VI is visiting the Valencia region, which has been hit by unprecedented floods.
All those killed at Palabek Refugee Settlement were children, an official tells local media.
She dealt with grisly murder cases and then became the state attorney general - the Democratic candidate's California career offers clues about how she might govern.
Rumours and misinformation are sowing doubt, while Donald Trump suggests to supporters he could only lose if Democrats cheat.
Rumours and misinformation are sowing doubt, while Donald Trump suggests to supporters he could only lose if Democrats cheat.
Europe's most valuable company has invested billions in Kalundborg on Denmark's coast - but it has many problems.
Two UK-based Africans tell the BBC how they are digging deep into their culture to change home decor.
Once millions used it to find out about their family histories - this week it was almost delisted. What went wrong?
Why are still no closer to unmasking the mysterious Satoshi Nakamoto?
Why are still no closer to unmasking the mysterious Satoshi Nakamoto?
President Maia Sandu is in a race seen as a choice between Europe and a return to Russian influence.
The move comes after weeks of clashes between security forces and supporters of ex-President Evo Morales.
The office of Lebanese Prime Minister Najib Mikati said the country would submit a complaint to the UN Security Council.
The office of Lebanese Prime Minister Najib Mikati said the country would submit a complaint to the UN Security Council.
There has been a growing outpouring of solidarity in and around Valencia to help those affected by catastrophic flooding.
There has been a growing outpouring of solidarity in and around Valencia to help those affected by catastrophic flooding.
Hundreds of volunteers take up buckets and brooms in Valencia as the government bolsters its response to the devastating floods.
Representatives of 196 countries have been meeting in Cali, Colombia, as part of the COP biodiversity summit.
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