On the night of 9 July, half a dozen masked attackers overpowered the security guard watching over test fields in Gross Lüsewitz, near Rostock. They then destroyed a field of wheat resistant to fungal diseases and a field of potatoes engineered to produce cyanophycin, an amino acid polymer that could potentially be used to make plastics. [...] Two nights later, a dozen attackers threatened guards with pepper spray and bats at a demonstration garden in Üplingen, in the state of Saxony-Anhalt. They destroyed a field of potatoes and trampled wheat and maize.