Outrage over SA politician Helen Zille's colonialism tweets

The former leader of South Africa's main opposition party has sparked public outcry over a series of social media posts that suggested colonialism brought benefits to the country.
"For those claiming legacy of colonialism was ONLY negative, think of our independent judiciary, transport infrastructure, piped water," Helen Zille, the ex-head of the Democratic Alliance (DA) party and the current premier of the Western Cape province, wrote on Twitter on Thursday.
She also tweeted that the transition into "specialised health care and medication" may have not been possible without "colonial influence".
Zille's comments drew strong criticism from political opponents and those within her own party, as well as on social media.