Ottawa (AFP) – Trucker-led protests against coronavirus restrictions in Canada shut down a new US border crossing on Thursday, as copycat movements gathered steam as far afield as Europe and New Zealand. The border blockades have already impacted business, with the key Ambassador Bridge linking Ontario and Detroit shut for several days — and major automakers forced to cut back production at several plants as a result. A second crossing in the western province of Alberta has been blocked for days, and on Thursday protesters closed down a third — in central Manitoba. Citing supply shortages, F…