Despite all this violence against the ethnic Chinese, they DON'T participate in politics. Weird. In this day and age, it's important they do.
Nevertheless, participating in politics may not save them from being mobbed again.
During the Suharto era, many Chinese businessmen pay "protection fee" to various politicians and military officers. The payment was in various forms, cash, shares, business deals etc.
Resentment to the Chinese continued to exist.
During the economic crisis in 1997, the authorities lost the power to control the people. Basically, they couldn't feed the people and the people needed to vent their anger.
Should another crisis occur, regardless of whether the Chinese change from their traditionally low political profile, they would still be targetted should a demagogue called for it.
By then, it makes no difference how many Chinese there are participating in politics, or what office they hold. Even the police and the military could not control the mob.
The only point for the Chinese to participate politically was to help Indonesia avoid another crisis.
But the only way to avoid another crisis was to gain a real say in politics.
The bumiputras, i.e., native Indonesians, would not look kindly at the Chinese minority gaining substantial power.
There is no painless or quick remedy for terrible state Indonesia is in.