You can be a dispensationalist without necessarily believing in a pre-tribulation rapture. However, even if the pre-trib position is correct, that doesn't mean that Christians will not suffer under tyranny, as happened in Russia and is happening in China, North Korea, Iran, Sudan, etc. The Deep State players may at first tolerate private Christian worship, as in Cuba and Venezuela. But the education system and the media will be 100% atheist and satanic. Small businesses and traditional families will be harried, and in time concentration camps will be set up for dissidents. This will speed up if BLM/Antifa can play Bolshevik to Biden/Harris's Kerensky.
Pre-tribbers: Don't count on being raptured out of the impending USSR 2,0 our rulers are planning.
Christ promised that his followers, the Jesus-movement Jews i.e. us Christians, WOULD experience sufferings and trials and tribulations in His name.