Probably the official CPC figure of 241 killed in total. Most of the serious estimates broadly agree - NSA said 180-500, and the Tiananmen Mothers organisation have identified 198 of the dead.

I think the numbers are a bit off - official Chinese figures were ~20 student protestors, ~20 police and army, and about 200 other protestors were killed.

A martyr for what? There were already plenty of dead to martyr, what difference would he make?

The problem with pissing all over Thatcher’s grave is that you eventually run out of piss.