In this Aug. 20, 2007 file photo, a Sudanese refugee family sit on the ground surrounded by Israeli army soldiers after they crossed from Egypt into Israel. (AP Photo/Ariel Schalit, File)

TEL AVIV, Israel — On stage, Mutasim Ali was a star. He spoke with confidence and enthusiasm, shouting slogans and sharing his feelings, igniting the thousands of fellow African migrants who gathered last Wednesday to demonstrate for refugee rights. Ali spoke of democracy, of hope and of a non-violent protest, swiftly alternating between Arabic, English and Hebrew. He spoke like a free and proud man.

In a few weeks, Ali could lose his freedom. The Israeli Immigration Authority has recently handed him a warrant. He is to report to Holot Detention Center, an open jail constructed in response to the arrival of the African migrants, within 30 days. Residents in Holot can leave but are required to return three times a day for roll call.

The migrants call Holot a concentration camp. The compound is located in the mostly uninhabited Negev Desert and can hold 3,000 people. For 27-year-old Ali, who escaped Sudan in 2009 because his “life was in danger,” reporting to Holot means he will not be able to work or maintain a normal life.

Ali is one of more than 55,000 African migrants that have entered Israel illegally in the past seven years. Most are from Sudan and Eritrea. All of them smuggled their way into the country through the land border with Egypt, which used to be porous until a fence was completed last year.

While the migrants call themselves asylum seekers, the Israeli government calls them “infiltrators,” but is unable to force them to return to their countries because of its commitment to the 1951 International Refugee Convention. Rather, Israel has mostly refused to review asylum applications from Sudanese and Eritreans, in violation of the same convention, according to an Amnesty International Report.

As a result, Israel has not granted refugee status to individuals from either population.

Israel’s approach appears to be aimed at applying more pressure on Africans to leave voluntary, and the threat of imprisonment in the detention center, combined with only temporary short-term visas, is a tool to drive migrants to that point. More and more of the African migrants in Israel are confronted with these two unattractive options.

What’s more, Israel’s immigration authority has been offering cash payments of up to $3,500 to those willing to return to Sudan.

Last year 2,600 Africans left Israel as part of this voluntary program.

The demonstration in Tel Aviv was part of a day of international solidarity organized by the African Asylum Seekers Committee in Israel. Protesters gathered in 13 cities around the world—including Frankfurt, London and Washington DC—to call on the Israeli government to provide freedom and rights to those seeking refuge.

The global event was the latest in a series of demonstrations organized by African migrants in Israel, as well as an ongoing hunger strike by several prisoners being held in Holot. The wave of protests is a response to the Israeli immigration authority’s increasing effort to collect migrants into detention facilities.

This month alone 1,700 African asylum seekers living in Israeli cities were ordered to report to the Holot facility, according to the Jerusalem Post. But very few have done so.

In a recent interview with The Guardian, the legal adviser to Israel’s Population and Immigration Authority, Daniel Solomon, said “Israel has never considered itself open to immigration on a broad scale… We see most of this group as illegal economic migrants.”

But the African migrants GlobalPost spoke with dispute this claim.

Mutasim Ali said he escaped his home in Darfur because conflicts and a dictatorship regime caused him to fear for his life. Dawit Damuz and Yohanse Bayru from Eritrea left a where extrajudicial killing, enforced disappearance and incommunicado detention are everyday occurences.

These are the dangers that more than 55,000 other Eritreans and Sudanese in Israel may face if they go back to their countries—and the reasons why they say they refuse to return.

This article first appeared on Global Post.