A car crashed into the front gate of the building housing German Chancellor Angela Merkel's offices on Wednesday morning, but did not cause major damage according to police.
The car, a Volkswagen station wagon, had the words "Stop Globalization Policies" written in white on its right side and "You damn killers of children and old people" on the other.
The federal states are expected to decide on Wednesday to extend the so-called "lockdown light" until Dec. 20.
Under the measures, bars, restaurants, and entertainment venues will remain shut, though schools and shops can stay open.
According to a draft proposal issued on Tuesday, from Dec. 1, only five people will be allowed to meet, though the number will be increased to 10 over the Christmas and New Year holidays.
The government's approach on the pandemic has prompted protests in some major cities.
Police unleashed water cannon to scatter the protesters, some of whom held banners with slogans such as "Stop the corona pandemic lie" and "No to forced vaccinations".
Critics said the amendment endangers citizens' civil rights. The conservative Alternative for Germany (AfD) party even compared it with the 1933 Enabling Act that paved the way to Hitler's Nazi dictatorship.