The Attempted Resistance to Imperial Rule and the Dissolution of the Imperial Senate

After the true nature of the Empire became clear, three of the most influential Imperial Senators, Bail Organa of Alderaan, Mon Mothma of Chandrila, and Garm Bel Iblis of Corellia, along with numerous others began plotting a secret resistance against the Galactic Empire. However, their plans were doomed to fail. In 10 BBY, Darth Vader learned Organa's "daughter", Princess Leia Organa, was actually his daughter. With the Emperor's permission, Vader installed a Imperial governor on Alderaan, making Queen Breha Organa a puppet, took Leia and began training her in the Sith ways, and tortured and executed Organa. In 3 BBY, Mon Mothma organized a minor resistance cell in the Star Wars dimension, but shortly after was killed by Imperial agents. In 2 BBY, Senator Iblis was exposed for his activities in fermenting civil dissent in the Star Wars and Star Trek dimensions and was captured, tortured, and executed.

In some dimensions across the Universe, limited rebellion or civil dissent did break out, all of them in 2 BBY. In the 1960s Civil Rights historical dimension, protesters staged non-violent anti-Imperial assemblies, public meetings, and rallies. The Emperor eventually ordered the devastation of the dimension, and more then 800 million innocent civilians died. In the Gladiator, Transformers, and Terminator dimensions, minor rebellion broke out, with raids against Imperial installations and the murder of Imperial officials in those dimensions. In the Star Trek dimension, some planets also engaged in dissent. On Vulcan, the Vulcans engaged in a slave rebellion, disobeying orders and causing destruction to numerous Imperial bases and installations. On Bajor, Bajoran slaves murdered their overseers and liberated hundreds of Imperial prisoners. And on Romulus, the enslaved Romulans engaged in a massive slave rebellion. In the Star Wars dimension, Ewok slaves on Endor attacked Imperial stormtroopers. On Mon Calamari, Mon Calamarian slaves deserted and escaped from confinement. And on Kashyyyk, Wookiee slaves murdered their overseers. These too, were brutally cracked down.

These minor threats of rebellion allowed the Emperor to endorse the Tarkin Doctrine of rule by fear of force rather then force itself. If anything, Palpatine decided that the unrest occurring in some dimensions would allow him to remove the last vestige of the Republic (the Senate) and consolidate his autocratic power in the Universe. In 0 BBY, shortly before the Destruction of Alderaan, the Emperor declared a state of emergency and dissolved the Imperial Senate. Thus the last traces of the Old Republic were swept away.

A key instrument in the enforcement of the Doctrine is the powerful superweapon, the Death Star, a moon-sized space station with sufficent firepower to easily destroy a single planet with a single discharge of it's powerful superlaser. Whereas many planets can afford planetary deflector shields capable of warding off virtually any conventional attack, none can defend against the power of that weapon.