Activists entered a construction site in Amsterdam’s Sloterdijk district on November 6, 2026, as the Stop Dirty Data Centres coalition began two days of actions across Europe. The protest targeted a data centre being developed for Microsoft and brought campaigners’ concerns about the rapid expansion of AI infrastructure into a high-profile confrontation.
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What happened at the Amsterdam site
Protesters climbed over the site’s fencing and entered the construction area. Reports described activists climbing cranes and hanging balloons; some also set off flares, and demonstrators clashed with police.
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11 The protest was organised by the Dutch group Geef Tegengas, whose name is translated as “Push Back.”
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Accounts differed on how many people got inside. A Reuters witness estimated that about 100 entered, while an organiser’s spokesperson told local broadcaster AT5 that the number was closer to 500. Those are attributed estimates, not a confirmed final count.
7 Al Jazeera separately described several hundred activists occupying the site.
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Demonstration ban and arrests
Capacity reported that Amsterdam’s mayor had banned the demonstration and that riot police made several arrests at the site.
7 A separate report put the number detained at 150–200, but the available accounts do not establish an official final tally.
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Who owns the site—and what is Microsoft’s role?
The project is being developed by Pure Data Centres, which DutchNews identifies as the site’s owner; the facility is intended to be leased to Microsoft. A report on the project said Pure Data Centres planned to invest more than $1 billion. That makes the distinction important: reports describe the site as a Pure Data Centres project for Microsoft, rather than a construction site owned by Microsoft.
Pure Data Centres reportedly asked protesters to leave safely and offered to discuss their concerns. A separate account said Microsoft supported peaceful expression while rejecting unlawful actions.
A two-day campaign across Europe
The Amsterdam action opened a wider mobilisation under the Stop Dirty Data Centres banner. Reports described more than 100 participating groups across 15 European countries, while Reuters reported that actions had been announced in 16 countries. The reports do not explain the difference in those counts.
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Planned events included a march in Dublin, a protest outside Poland’s parliament in Warsaw, and a demonstration outside a Microsoft data centre in Denmark.
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9 The coalition called for a pause on large-scale data-centre construction until governments establish clearer rules.
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Why campaigners want construction paused
Campaigners have raised concerns about data-centre expansion’s potential demands on electricity, water, land and public infrastructure, as well as possible effects on housing, jobs and the cost of living.
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6 These are the coalition’s stated concerns, not proof that every listed impact has occurred at this project.
The demand is framed as a temporary pause on major new projects while social and environmental concerns are considered—not a call to close existing data centres or oppose technological progress.
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14 The wider dispute is therefore about the conditions for building new infrastructure: campaigners want governments to set clearer rules before expansion continues, while the Amsterdam protest put that demand directly at a major construction site.
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