Mimi sipendi utawala kandamizi.

A simple breakdown is:

• Mimi = I / me
• sipendi = I do not like
• utawala = rule, governance, regime, administration
• kandamizi = oppressive / repressive

So the whole sentence means something like I do not like oppressive rule or I don't like an oppressive regime.

Because the verb sipendi already tells you the subject is I.

In Swahili, subject information is usually built into the verb, so mimi is often optional. Adding mimi gives extra emphasis, something like:

• As for me, I don't like oppressive rule
• I myself don't like oppressive rule

So:

• Sipendi utawala kandamizi = perfectly natural
• Mimi sipendi utawala kandamizi = natural, but more emphatic

sipendi can be broken down as:

• si- = I do not / negative first-person singular
• -pend- = the verb root meaning like / love
• -i = the final vowel used here in the negative present form

So sipendi literally works like I-not-like.

It comes from the dictionary form kupenda = to like / to love.

That is a very common pattern in Swahili negative present forms.

The basic verb is kupenda, with final -a.
But in the negative present, the final -a changes to -i:

• napenda = I like
• sipendi = I do not like

So the -i is a clue that the verb is in a negative present-type form.

It is often understood as a general present statement.

So Mimi sipendi utawala kandamizi usually means something like:

• I don't like oppressive rule
• I am not in favor of oppressive rule

It is not necessarily only about this exact moment. It can express a general opinion, attitude, or principle.

Not exactly. sipendi is usually milder than I hate.

• sipendi = I don't like
• nachukia / ninachukia = I hate

So this sentence sounds like a negative opinion or rejection, but not necessarily the strongest possible emotion.

utawala is a noun related to the idea of ruling or governing. Depending on context, it can be translated as:

• rule
• governance
• government
• regime
• administration

In this sentence, regime or rule is often the most natural fit, because utawala kandamizi refers to an oppressive form of governing.

Because in Swahili, descriptive words usually come after the noun they describe.

So:

• utawala kandamizi = literally rule oppressive
• natural English = oppressive rule

That noun + descriptor order is very normal in Swahili.

Also, kandamizi is related to the verb kukandamiza, which means to oppress or to suppress.

Yes. In fact, that is often the more neutral way to say it.

Since sipendi already includes the subject I, the shorter sentence is complete:

• Sipendi utawala kandamizi. = I don't like oppressive rule.

Use mimi when you want extra emphasis, contrast, or personal stress.

Swahili does not normally use articles like English a, an, and the.

So utawala kandamizi can mean:

• oppressive rule
• an oppressive regime
• the oppressive regime

The exact English article depends on context, not on a separate word in Swahili.