What's behind the protests in the Gaza Strip?

The UN Secretary General Antonio Guterres has called for an independent investigation into the deaths of 17 Palestinians shot by Israeli forces during Friday's protests in Gaza.

More than 1,400 protesters were injured, half of them by Israeli gunfire.

The protestors were marking Land Day, when 2,000 hectares of land was confiscated from Palestinian citizens of Israel in 1976.

Six people died in subsequent protests then.

As the two state solution peace process dies, are frustrations rising? And can a Jewish majority in Israel be maintained if Palestinian refugees are ever allowed to return to their land?