There has been numerous attacks on the Capitol. You just don't hear about the ones perpetrated by left-wing domestic terrorists.

In 1954, racist, POC Nationalist insurrectionists stormed the Capitol with automatic weapons, shooting five Congressmen.

In 1971, radical far-left domestic terrorists set off a bomb inside the Capitol. An actual bomb that actually exploded. Not one supposedly "placed in the doorway" of a political party's HQ.

In 1983, more far-left domestic terrorists set off another bomb inside the Capitol.

In 1998, a deranged man indoctrinated with leftist ideology stormed the Capitol and murdered two Capitol Police officers. These were confirmed killings, unlike the officer that died two days after Jan 6th of a blood clot that has somehow been attributed to the riot, despite no coroners report or any video evidence whatsoever.

All of these facts are easily found on a simple google search. Anyone that downvotes this is just an ignorant ideologue.