It's impossible to boycott all products made in country "x". The computer you go online with may be made in the USA (Not bloody likely, except for some really high end machines) but even if it has a US flag on it, there are inevitably parts sourced from other countries inside.

Buy a GM car and buy American?

GM makes engines for their midrange SUV's in China.

Ford has various cast iron assemblies made in China, as do most automakers.

The LCD on your "Made in China" laptop? Highly likely that the glass for that display came from upstate NY, as the biggest producer of glass for LCD's is Corning, Inc.

If and product states that it's made in the USA from domestics parts, labor and materials, I'm more likely to think "Prove it" than buy it.

The reason the Olympics draw the protests is that they are a high profile event internationally, with 24/7 television coverage.