Several thousand people gathered in central Berlin on Saturday to demonstrate against right-wing extremism the day before Germany votes in European Parliament elections, police reported. The afternoon demonstration was so far peaceful, with many people joining, a police spokesman said as the protest was proceeding. The organizers had registered a demonstration for 10,000 participants. The protestors held up placards reading “Rights for people instead of right-wing people” and “Diversity without alternative.” A broad alliance of civil society organizations in major cities, such as Hamburg, Muni…